LED battery rear light with recharging function. Two 0.5 Watt high power LEDs. Excellent visibility through the new SIGMA LOOP-LIGHT-SYSTEM. Burn time: - Permanent: approx. 20h - Flashing: approx. 40h 2-Stage battery indicator. Tool-free, easy to change batteries (2 x AAA RTU NiMH rechargeable batteries included). Vertically adjustable, removable bracket with a twist-lock function. Tool-free O-ring installation, also possible with cable ties. Watertight. Weight: 70g.