Size (approximate): Head (W x D x H): 2.9 x 1.5 x 2.0 inches (73.1 x 38.8 x 52.8 mm); Battery box part: Width 3.3 x Depth 1.2 x Height 2.1 inches (84.8 x 30.4 x 53.8 mm); Product weight: Approx. 6 oz (190 g)
Set Contents/Accessories: Main unit, non-slip headband, spare headband (with anti-skid), silicone band (buckle x 4), helmet holder x 4, micro USB cable (19.7 inches (50 cm)), dedicated rechargeable battery
Brightness: High/600 lumens, Mid/350 lumens, Eco/50 lumens, Batteries: Dedicated rechargeable batteries or AA alkaline batteries x 3 (sold separately)
Practical Lighting: High/8 hours, Mid/13 hours, Eco/27 hours, Rear Recognition Light, 90 hours, Rear Recognition Light, Flashing/130 hours
Features: Drop resistant, dust and splash resistant (IP64 compliant), maximum irradiation distance: approx. 49.2 ft (142 m)