Ledlenser K4R Key Ring Lamp with 4GB USB Flash Drive Grey with Gift Box

The K4R 4GB is a rechargeable keychain light with up to 120 lumens of light output, making it significantly brighter than most smartphone flashlight functions. In addition, it serves as a USB flash drive with 4GB data storage space. The USB interface also allows easy and wireless charging. With its compacted brushed aluminium housing, the K4R 4GB combines a high-quality look and feel, making it an elegant and practical accessory for your key ring.


  • Ultra-compact keychain light with up to 120 lumens of light output
  • High-quality brushed aluminium housing with carabiner for easy attachment
  • Built-in USB flash drive with 4GB storage space, also allowing easy and fast charging via the fold-out USB-A interface without separate charging cable
  • Integrated battery and charge level indicator
  • Practical transport lock protects against unintentional switching on


      • LED Configuration: 1 x Power LED
      • Luminosity: MAX 120 lm - MIN 20 lm
      • Colour temperature [K]: 5000 to 8000
      • Colour rendering index (CRI): 70
      • Lighting Range: MAX 30 metres - MIN 10 metres
      • Battery Duration: MAX 3.5 h - MIN 1 h
      • Battery: 1x Li-ion 3.7V 180 mAh
      • Rechargeable: Yes
      • Charging time: 180 min
      • Water Resistance: IP2X
      • Drop Test: 2 m
      • Length (Defocused): 52 mm
      • Weight incl. batteries: 20 g

      Lighting Functions

      Boost, Power, Low Power

      Additional features

      Transportation lock, Red Light

      Box Contents

      Snap Hook