GENTOS Bike Light Lumens 10 Hours of Runtime Uses One AA Alkaline ANSI Standard [20 / / Water-Resistant] Battery, Black, BL-B01BK,

Size: Approx. 89.2mm wide x 35.1mm deep x 37.1mm high Weight: Approx. 59g (including batteries) Set contents and accessories: Main unit, dedicated bracket (compatible handle diameter: 25-32mm), adjustment rubber x 3 Brightness: 20 lumens Battery used: 1 x AA alkaline battery (sold separately) Light source: Chip type white LED x 1 Actual lighting time (approx.): 10 hours (steady), 20 hours (flashing) Features: 1m drop resistance, splash-proof (IPX4 compliant), compatible with Eneloop batteries Maximum irradiation distance: about 20m