Features: 1 pc (15 chips) Round ring COB high brightness red LED CNC Aluminium heat sink casing Mode memory function, Day flash mode, Auto safe mode Rechargeable lithium polymer battery (3.7V 280m Ah) 3 Steady modes & 4 flashing modes Quick release universal bracket fits all round & AERO style bars Low battery, charging & fully charged indicator Automatic fully charged cut-off system Side visibility Water resistance (IPX 4) Recharge time 2 hrs Size (W x D x H): 44 x 32 x 21 mm Weight: 0.021 Kg; Packing & Package 0.1kg In the box: RB-22 (Universal bracket) 2 O-rings for mounting: RS-G (fits 20-35mm diameters) RS-H (fits 35-52mm diameters) BK-21 (Belt clip) USB (Universal Serial Bus)-MICRO (USB cable) Optional Accessories: RB-19 (Rear rack mount bracket) RB-21 (Saddle rail bracket) RB-23 (Helmet bracket) RB -27 (Go Pro mount adapter) XP- USC (Wall charger)