Features: 1 pc (30 chips) Rectangular ring COB high brightness white LED CNC Aluminum heat sink casing Rechargeable lithium polymer battery (3.7V 800 mAh) Day flash mode Mode memory function Auto safe mode 4 steady modes, 4 flashing modes Quick release universal bracket (fits all round and AERO style bars) Low battery, charging and fully charged indicator Automatic fully charged cut-off system Side visibility Water resistance (IPX 4) Recharge time 2.5hrs Size (W x D x H): 93 x 22 x 17 mm Weight: 0.044Kg; Packing & Package: 0.1Kg Contents: Nebula-W 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-WP (Water resistant USB cable)