The new MONO RL is a small and modern front light for everyday use - Thanks to the adjustable and detachable bracket and the integrated lithium ion batteries with a MICRO USB recharging function, these effervescent light is always ready to use. Click switch ON/OFF response and easy access, even with gloves High performance optics For optimum vivibility and therefore higher safety, thanks to the new SIGMA LOOP-LIGHT-SYSTEM. Fast tool-free mounting Adjustable rubber clamp mounting; just right for fastening to all seat posts and rear wheel stays Very easy to recharge like a Smartphone via MICRO-USB Features & Informationen Integrated lithium-ion rechargeable battery 2-stage battery / charge status indicator During usage: residual capacity < 85% = green LED residual capacity < 15% = red LED During recharge: red LED during charging process green LED when the batterie is fully charged USB rechargeable LED rear light with MICRO-USB re-charging function 0.5 W power LED Excellent visibility thanks to the new SIGMA LOOP-LIGHT-SYSTEM Burn time: 7 h Adjustable, removable bracket Tool-free O-ring installation Click switch with tactile ON / OFF response Water resistant Weight: 35 g