Product keywords
Please enter the email address account
NITECORE E4K Pocket Small Straight Flashlight 4400LM
Share to:

NITECORE E4K Pocket Small Straight Flashlight 4400LM

- Black

One-handed Operation, One-key Control, Two Modes of Use, Flexible Switching, IP68 Waterproof
Save an extra for using the App

Scan the QR code to buy:

  • 1.Download our FREE app on Google play or App Store.
  • 2.Launch the app and scan the QR code to buy directly.

Follow the below steps:

  • 1.Sign in to
  • 2.Add product(s) marked with to your Cart.
  • 3.Open our app, and go to your Cart.
  • 4.Pay for your order for an immediate discount!
    COD This product supports COD on delivery. Suggestions: Do not place orders with non-COD products, otherwise you will not be able to choose COD payment method.
    Ship between: Nov 01 - Nov 03, Estimated Shipping Time: business days Order Processing Time may require a few days. Once dispatched from warehouse, Shipping (or Delivery) Time depends on the Shipping Method.
  • +
  • interest-free You can enjoy a maximum of 0 interest-free installments, and may not enjoy this offer when placing orders with other products
Tax Info Price Protection Price Disclaimer Repair Warranty Report Item
Recommended for You

NITECORE E4K Youtube Video Reviews

NITECORE E4K Descriptions

Main Features:
Small and powerful 4400 lumens, impeccable
E4K is just a palm size, small size and big explosive
Using four CREE XP-L2 V6 LEDs, the service life is up to 50000 hours, 4400 lumens dazzling glare, 211 meters precise long-range, and the light intensity can reach 11100 candelas, to meet the daily, hiking, camping and other lighting needs

LED independent constant current drive, stable output
The four lamp beads are driven by independent constant current, without affecting each other, always maintaining stable output, high safety and long-lasting durability

Small straight size, flexible
E4K is compact and easy to carry

Built with CNC integrated molding technology, strong compressive heat dissipation
E4K is made by integrated processing technology to achieve a sturdy and reliable engineering structure. It has the characteristics of light weight and sturdiness, and good heat dissipation performance

Use 21700 large-capacity lithium battery of equivalent volume and greatly improved performance
The 21700 battery has high energy density, good safety, and long cycle life. It is widely used to power electric vehicles and is a wind vane for cylindrical batteries. A variety of conventional 21700 lighting products and other equipment for long-term attack

Standard 1 NL2150HPR battery (5000mAh)
E4K uses one 21700 lithium battery with a discharge capacity of 15A or more, and is compatible with CR123 batteries and RCR123 batteries

Up to 700 hours of battery life
30 days of continuous use without stopping

One-handed operation, one-key control
The side press switch button designed for outdoor applications, high-quality silicone material, wear-resistant and flexible, large contact surface can be easily operated even when wearing gloves

Simple and easy to use interface
Long press the button: turn on the flashlight lighting/automatically adjust the gear in order
Short press the button: trigger the battery prompt
Press the button twice quickly: turn on the energy saving file
Quickly press the button three times: turn on extremely bright / flash

Two modes of use, flexible switching
5 levels of brightness
Extremely bright gear | Highly bright gear | Medium bright gear | Low bright gear | Energy saving gear
3 special functions
Strobe | Beacon | SOS

Gear memory function
Provide intelligent gear memory function, after closing, one key to open to return to the previous gear

ATR temperature control module
E4K has a built-in ATR temperature control module, which can automatically adjust the brightness output according to the working state of the flashlight and the external temperature to ensure the stable operation of the flashlight for a long time

Battery prompt function
In the off state, lightly press the switch button, the blue power indicator built into the button will flash to indicate the remaining battery power

Simple in shape, good at heart
Diamond design
Effective anti-skid, easy to hold for a long time
Design of cooling fins at both ends of the barrel
Effectively reduce the weight of flashlight and enhance heat dissipation
Inverted tail function
Easy to operate and use, can be placed on a flat surface to better liberate hands

Standard two-way holding clip, rich carrying methods
Convenient to put in a pocket, backpack or worn on a belt, can be quickly picked at any time

IP68 protection grade
Two meters underwater | 1 meter drop resistance
Suitable for all-weather use

Maximum output: 4400lm
Maximum range: 211m
Maximum light intensity: 11100 cd
Life time: 700 h 0 m / 29.16 d
Light cup type: Glossy Cup
Use battery: 2 x CR123, 2 x RCR123, 1 x 21700
Special modes: Beacon, SOS, Flash
Color temperature type: white light
Application scenarios: equipment, search, outdoor/camping



Brand: Nitecore
Model: E4K
Materials: Aluminum Alloy
Flashlight Type: Outdoors
Flashlight size: Mid size
Feature: Adjustable brightness
Battery Quantity: 1
Battery Included or Not: Yes
Power (W): 15

Product Details

Power Source: Battery
Working Voltage: 5V
Body Material: Aviation Aluminum

Dimensions and Weight

Product weight: 0.0800 kg
Package weight: 0.2620 kg
Product size (L x W x H): 11.76 x 2.86 x 2.81 cm / 4.63 x 1.13 x 1.11 inches
Package size (L x W x H): 14.50 x 10.00 x 5.00 cm / 5.71 x 3.94 x 1.97 inches

Package Contents

Package Contents: 1 x Flashlight, 1 x USB-C Charging Cable, 1 x Battery Sleeve, 1 x Flashlight Case, 1 x Hanging Rope, 1 x Waterproof Ring
NITECORE E4K Flashlight
NITECORE E4K Flashlight Small and powerful 4400 lumens, impeccable
NITECORE E4K Flashlight LED independent constant current drive, stable output
NITECORE E4K Flashlight Small straight size, flexible
NITECORE E4K Flashlight Built with CNC integrated molding technology, strong compressive heat dissipation
NITECORE E4K Flashlight Use 21700 large-capacity lithium battery
NITECORE E4K Flashlight Standard 1 NL2150HPR battery (5000mAh)
NITECORE E4K Flashlight Up to 700 hours of battery life
NITECORE E4K Flashlight One-handed operation, one-key control
NITECORE E4K Flashlight Simple and easy to use interface
NITECORE E4K Flashlight Two modes of use, flexible switching
NITECORE E4K Flashlight 5 levels of brightness
NITECORE E4K Flashlight Gear memory function
NITECORE E4K Flashlight ATR temperature control module
NITECORE E4K Flashlight Battery prompt function
NITECORE E4K Flashlight Simple in shape, good at heart
NITECORE E4K Flashlight Standard two-way holding clip, rich carrying methods
NITECORE E4K Flashlight IP68 protection grade

Suggested Products

Customer Reviews

4.88 out of 5
  • 7
  • 1
  • 0
  • 0
  • 0
See all 8 reviews Write a Review
  • tstagear
    Yes (0) Color: Black
    great flashlight
    With 4400 lumens, it has a lot of light output used to create a nice floody light which not only lights up what you are directly pointing the light at, but also the periphery, which is great for many general use cases.
    However at the higher levels, the E4K is also able to throw a lot of light at quite a reasonable distance.
    This light feels well balanced in a medium sized hand (not head/tail-heavy).
    Switching between overhand and underhand holding method is easy with its form factor.
    The knurling on the light enable it to be sufficiently “grippy”, even with wet hands/gloves.
    It is able to tail-stand perfectly. The lanyard can only be attached to the pocket clip and will not affect tail-stand capability.

    With the provided USB-C Cable, the battery was charging at ~0.85A and the button-top become hot very fast.
    No electronic lockout but mechanical lockout is possible when needed - a quarter turn (anti-clockwise) of the tailcap will enable mechanical lockout.
    Nitecore doesn’t recommend using an 18650, but it work with a protected 18650 as long as you don't expect best performance.
    In turbo mode it gets warm fast then steps down to high in less than 30 seconds.
    Not good UI.

    Mar 06,2021

  • Lonnie D.
    Yes (0) Color: Black
    Great flashlight.
    Small light that packs a punch for brightness and EDC. I like the size, brightness, and build quality of the light. I use it as an EDC light. Unbelievable light for the price and size. If you're outdoors a lot or if your needs require both very low and very high light output in a pocket friendly light. If you're mostly indoors or if you don't need more than 1000 lumens, then a smaller flashlight might be more practical for you. You will not be disappointed.

    Jul 11,2020

  • Melvin G.
    Yes (0) Color: Black
    Super bright
    Exceeded my expectations.An EDC must. Absolutely love this for my job. Super bright and neat. Very bright and compact light. Been using nitecore lights for several years on duty and off and wanted a spare. The only downside is that it gets really hot after 1 min. The battery lasts surprisingly long considering the size and light output. Good use while camping I suppose. How the lens doesn't melt is a mystery to me but hey nitecore makes quality stuff.

    Jul 12,2020

  • BigJohn54
    Yes (0) Color: Black
    Nitecore E4K Review
    The 4400 turbo mode is absolutely ridiculous and makes me giggle Everytime I use it. Beam pattern is floody, to be expected because of the shallow reflectors housing the quad leds. Great for exploration and searching but not the best pick if you prefer a focused, "spot" beam. Overall its a very powerful flashlight, small and light.

    Jul 14,2020

  • R.A.
    Yes (0) Color: Black
    Good for the price
    This is one seriously bright flashlight. The on/off button are easy to use even with structure gloves on, if ignore its easy to get hot.

    Jul 08,2020


  • How to choose a LED flashlight?

    LED flashlight is a new type of flashlight with LED (light emitting diode) as its light source. We will introduce you the selection tips of LED flashlights and the advantages of LED flashlights: How to choose a LED flashlight

Customer Questions

  • All
  • Product Information
  • Stock Status
  • Payment
  • About Shipping
  • Others

Be the FIRST to Ask a question. Want G Points? Just Write a Review!

0 Questions & Answers View All

Sponsored Products Related to This Item


There are two key factors which will affect the time you receive your items.

Item processing time
After receiving your order,we require some time to test the product to ensure its quality.The exact processing time varies depending on the item.The average processing time is 3 working days.but this can also be affected by the item's stock status. For small quantity orders,the processing time is 1-3days while larger quantity orders may require 2-5days.
Shipping methods
China Warehouse:
Shipping Type Country or Region Arrive within 1-7 Days Arrive within 8-15 Days Arrive within 16-30 Days Arrive within 31-45 Days Average Time (Days)
Unregistered Air Mail or Registered Air Mail United States 0.52% 44.87% 49.88% 3.5% 18.13
Spain, United Kingdom, Italy, Germany, France & Portugal 5.18% 43.44% 48.34% 1.17% 15
Netherlands, Greece, Poland, Hungary, Slovakia, Czech Republic 2.96% 40.34% 52.54% 3.74% 18.66
Russia 0% 4.45% 84.41% 11.1% 28
Japan, Korea 0% 21.30% 68.80% 9.66% 17.75
Brazil 0% 0% 23.91% 72.09% 38.6
Turkey 0% 37.75% 59.05% 3.1% 20.33
Thailand, Singapore & Malaysia 0% 40.39% 56.12% 2.6% 16.2
Other countries 0.7% 38.79% 47.94% 8.56% 23.57
Priority Line United States 12.28% 79.05% 7.4% 0.52% 11.75
Spain, United Kingdom, Italy, Germany, France & Portugal 8.44% 66.56% 23.45% 0.45% 13.55
Russia 0% 3.48% 75.79% 20.04% 31
Brazil 2.21% 6% 61.29% 25.46% 30
Turkey 20.42% 77% 3% 0.08% 10
Australia 7.67% 86.60% 5.68% 0% 11
Korea 97.54% 1.57% 0.89% 0% 7
Japan 95.80% 2.09% 0% 0% 6.84
Thailand, Singapore & Malaysia 58.96% 41.04% 0% 0% 8.45
Other countries 22.33% 30.8% 27.62% 17.64% 18.65
Expedited Shipping ALL countries(EMS) 3.8% 46.8% 26% 15% 14.8
ALL countries(DHL) 65.8% 25.75% 3.86% 0.37% 6.72
GW Warehouse: Typically 3-5 days to the UK, 3-7 days to other European countries.
USA Warehouse: Generally, 3-7 days to a USA address.
ES Warehouse: Generally, 2-5 days to the Spain, 3-7 days to the Portugal.
Shipping from warehouse nearest to shipping address is faster. Additional charges may apply.
Note: This is a general guide and delays maybe caused force majeure, natural disasters, inclement weather, war, public holidays, and factors outside our control. Generally speaking, we offer free shipping for NITECORE E4K to United States (US, USA), United Kingdom (UK, GB), Germany, Italy, France, Spain, Portugal, Poland, Brazil, Russia, Japan, Greece, Austria, Hungary, Slovakia, Czech Republic, Ireland, Lithuania, Israel, Denmark, Norway, Sweden, Canada, Australia, Netherlands, Korea, Turkey, Mexico, Ukraine, Romania, Columbia, Thailand, Singapore, Malaysia etc. Please choose the shipping methods for the final price.

Payment accepts PayPal,Credit Cards,Wire Transfer,Westem Union, YandexMoney,Webmoney,Boleto,OXXO and BKM as secure payment methods.

The most convenient payment method in the world.
Wire transfer
For orders which exceed $1,500,please contact us at
Note: please email us the order number,the amount transferred along with currency type,and the exact date of the wire transfer.
Western Union
Please contact us at for details.
Note: please email us the following information after you have paid via Westem Union:
· Control Number(10 digits)
· The exact amount sent along with the currency
· Name of sender.
· Address of sender
YandexMoney、 Webmoney
With YandexMoney and Webmoney, it is convenient and safe for you to pay via credit card、wallet or cash
For Brazil customers, we accept Boleto: you only need to fill in the payment information, remember your Boleto Voucher information and pay it within 3 days at any Boleto stores.
For Mexico customers, we accept OXXO: you can choose OXXO payment on our website, and then remember your OXXO Voucher information and pay it within 3 days at any OXXO stores.

Do you want to bulk buy NITECORE E4K ? Please submit your wholesale NITECORE E4K inquiry below. Please note we usually don’t offer free shipping on wholesale NITECORE E4K orders, but the wholesale price will be a big bargain.

Your Recently Viewed Items

See personalized recommendations

New customer? Start here
Pre-sale Service