Slide Focus
Rechargeable
Water Resistant
Rugged Build
120 
3 H
30 M
Free shipping over $50
7-year warranty
Live expert support
Pay over time
$19.95
Small light, big power: The K4R is a rechargeable keychain light with up to 120 lumens of light output, making it significantly brighter than most smartphone torch functions. No more messing with annoying cables as the light can be conveniently charged using the integrated fold-out USB-A interface. With its compacted brushed aluminum housing, the K4R combines a high-quality look and feel, making it an elegant and practical accessory for your key ring.
- Ultracompact keychain light with up to 120 lumens of light output
- High-quality brushed aluminum housing with carabiner for easy attachment
- Easy and fast charging via foldout USB-A interface without separate charging cable
- Integrated battery and charge level indicator
- Practical transport lock protects against unintentional switching on
Light Output · by mode
| Boost | Power | Low | |
|---|---|---|---|
| Lumens lm | 120 | 80 | 20 |
| Beam distance m | 30 | 25 | 10 |
| Run time h | - | 1 | 3 |
lm lumensm metersh hours
Power & Charging
Battery typeLithium-ion
Quantity1
Voltage V3.7
Capacity mAh180
Energy Wh0.666
Charging min180
RechargeableYes
Light Source
LEDs1
ColorCool White
Color temp K5000 to 8000
CRI70
Physical & Rating
Weight g20
MaterialPC, Aluminum alloy
IP ratingIP20
Drop test m2
Temp range °C-20 to +40
SwitchTop Switch
Features & Technologies
Transportation Lock
LED
- LED Configuration 1 x POWER LED
- Luminosity1 MAX 120 lm - MIN 20 lm
- Lighting Range1 MAX 30 m - MIN 10 m
- Battery Duration1 MAX 3 h - MIN 1 h
POWER LED
This LED enables your Ledlenser to achieve high luminosity.
Light Functions
- Power - optimised light output
- Low Power - economical light for long battery life, glare-free reading and working
- Boost - short-duration maximum power for more brightness
Casing
- Brushed aluminium housing with carabiner
Switches
- End Cap Switch - a switch on the end of the light (end cap)
Special Functions
- Extremely Compact - yet very powerful with 60 lumens
- Rechargeable - via the supplied USB cable
- Metal Snap Hook - for easy attachment to keys, bags, etc.
Height and Weight
- Length (defocused) 52 mm
- Head Diameter 25 mm
- Weight 20 g
Battery and Casing
- Battery Battery 1 x Li-ion Polymer 3.7V
- Water Resistance IP20
- Rechargeable Yes
IP-Class
- IP2X - no special protection against elements