Ledlenser K4R Gray Window Box USB Flashlight 502575 Properties: Small size, powerful – the K4R flashlight is happy to help with a bunch of keys. The luminous intensity is up to 120 lumens. It is a much better light assistant than the smartphone flashlight. No more cumbersome cables are needed, charging is done via the lockable USB-A input. Thanks to its compact housing made of “rough” aluminum, the flashlight combines high-quality optics and comfort of use. This makes it ideal as a helpful and practical accessory for keys and more. The most important advantages of the Ledlenser K4R flashlight: Microscopic dimensions Incredible efficiency for such a small flashlight – 120 lumens giving a light range of up to 30 meters Easy to use Transport security Fast charging via USB-A port Carabiner hook for easy hanging Battery charge indicator Low weight – 20 g. Product properties: Power supply: battery (Li-ion, 180 mAh, 3.7 V) Material: aluminum Luminous flux: up to 120 lm Light range: 30 m Maximum operating time: 3.5 hours Length: 52 mm IP protection class: IP20 Weight: 20 g Light functions (power – range – operating time)*: Boost mode (instantaneous maximum power): 120 lm – 30 m Power r: 80 lm – 25 m – 1 h Low Power : 20 lm – 10 m – 3.5 h *Measured values according to ANSI FL1. Unless specific settings are expressly specified, the values for luminous flux (lumen/lm) and light range (meter/m) refer to the brightest setting, and the values for burn time (hours/h) refer to the lowest light output. The Boost function (if available) can be used multiple times, but is only available for a short time each time. If the flashlight is equipped with colored LEDs, the measured values refer to white light or a white LED. Unless a specific energy mode is expressly specified, the energy-saving mode is used as the basis for measurement in the respective setting. Included in the set: K4R flashlight Original, aesthetic Ledlenser packaging Hook, carabiner for attaching a flashlight Complete manufacturer's documentation