The Ledlenser iW3R is a tough power bank with a built-in spotlight, made for tradespeople, handymen and construction workers whose phone has to last a long working day. The 4,000 mAh battery can charge your phone or other USB devices, and the spotlight gives up to 320 lumens with two dimmer settings for checking dark corners. A battery indicator shows how much charge is left. The ports are covered, giving dust and splash protection to IP54, and it is drop tested to 1 m. The light runs for up to 40 hours on low and the unit recharges in about 5 hours. It measures 122 x 32 x 32 mm and weighs about 143 g. Supplied with a USB cable.