The unique Aerolite provides fantastic visibility making it ideal for the regular rider / commuter. This compact light includes both a front and rear light in one unit. 1 piecece Cre XH-G LED (Front) & 7 chip COB LED (Rear) Rechargeable lithium ion battery 3.7v / 700 mAh 6 modes Quick release patented universal bracket Quick release helmet mount 2 x O rings 20-35mm & 35-52mm Low battery, cahrging & fully charged indiator Automatic fully charged cut off High precision lens Side visbility IPX4 62 degrees total light angle 11 degrees spot angle 41g 65mm x 23.5mm x 27mm This light can mount to: Helmet Handlebars Handlebar drops Seat post Stays Runtimes: Over drive 60 lumens - 5 hours 50 mins High 30 lumens - 9 hours 50 mins Flashing 15 lumens - 38 hours 20 mins Overdrive / Overdrive 60 lumen front / 10 lumen rear - 2 hours 40 mins Overdrive flashing 60 lumen front / 5 lumen rear - 4 hours 15 mins Flashing Flashing 25 lumen front / 5 lumen rear - 13 hours 15 mins Spares: LAA595 - Bracket LAA596 - Helmet bracket LAA517 - USB cable LAA534 - Mains charger LAA215 - O rings