Full power off IC system(long term unused battery protection) Full alloy and CNC’d Color changeable at Steady & Flash types Red - Yellow - Green - Blue - Pink - 5 colors circles Power source: CR2032 x 2 Run time: 50_60 hours(flash), 25_30(steady) 5 Modes constant, max 7 LM 1: Steady light(above color available) 2: Slow motion flash(colors constantchanges) 3: Slow flash(above colors available) 4: Medium flash(above colors available) 5: Quick flash(above colors available) Water resistance design Power magnet design, easy to install and off 30 x 31mm _ Weight: 24g(w / o battery & bracket)