Features 1 pc (50 chips) Rectangular Ring COB high brightness 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 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) RB-21 (Saddle rail bracket) USB-WP (Water resistant USB cable) Optional Accessories RB-19 (Rear rack bracket) RB-23 (Helmet bracket) RB-27 (GoPro mount adapter) USB-RM-1200 (USB remote control 1200 mm)