LED Lenser K4R grey 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 Power source type Rechargeable battery Battery type Li-ion Battery replaceable No Total battery voltage [V] 3.7 Total battery capacity [mAh] 180 Total battery energy [Wh] 0.67 Rechargeable Yes Charging time [min] 180 Light output [lm] 230/80/20 Beam distance [m] 30/25/10 Run time [h] 1/3.5 Energy modes Energy Saving Energy status indicator Battery Indicator, Charge Indicator IP class IP2X Drop test (drop height) [m] 2 Working temperature range [°C] -20 to +40 Amount LEDs 1 LED type Power LED LIGHT FUNCTIONS Boost, Power, Low Power Length defocused [mm] 52 Head diameter [mm] 25 Tube diameter [mm] 25 Weight incl. batteries [g] 20 Weight without batteries [g] 15 Focus function No Head material PC Tube material Aluminum alloy Optic Plastic lense (PMMA) FEATURES Transportation lock Dimensions W x H x D [cm] 7.2 x 8.5 x 3 Gross weight [g] 63