Helmet mounted unit with a front and rear light all-in-one.Specifications: GoPro Mount and Helmet Mount Included LED type: CREE XP-G3 LED Battery: 103040 Li-ion - 1200mAh Max Lumens: 600 lumens Front - 10 lumens Rear Charging Time: 3 hours Run Time: 2-8 hours Lighting color: 5500K White Size: 71 x 46 x 27mm Weight: 90g Charging Port: USB-C Waterproof level: IP65 Material: Anodized Aluminum Modes and run times: Front light 100% Steady(2h+1h safe mode) 75% Steady (2.5h+1h safe mode) 50% Steady (4h+1h safe mode) 25% Steady (8h+1h safe mode) Slow flash(8h)-SOS (8h) Tail light (Double click) 100% steady-slow flash-breathe-off Light Indicator: Power indicator: 100% - 75% - 50% - 25% Modes indicator: 100% steady - 75% steady - 50% steady - 25% steady - Flash-SOS