Ideal for a wide range of outdoor and indoor activities. 2 LED outputs - 1000 lumen (100%) and 500 lumens (50%). Integral 3.7V / 4400mAh Li-Ion rechargeable battery. 5V/2.1A USB power bank for mobile phone and tablet charging. USB power bank 5V/2.1A and charging 5V/2A. 5 function work light: LED battery power indicator. Zoom in/out feature with a power bank. Charging time: 2-3 hours. Run time: 5-6 hours (approx.). Distance: 20 metres. 35cm Built-in USB charging lead.