The Einstein™ 400 RC Headlamp by NEBO is a low-profile, compact 400 lumen rechargeable headlamp with 5 light modes. Featuring a wide beam C.O.B LED and a focused spotlight beam, the Einstein will have you covered whatever you're using it for. The included rechargeable battery allows for up to 8 hours of operation in between charges. 5 LIGHT MODESSPOTLIGHT• Turbo (400 lumens): 35 second intervals / 133 meters• High (250 lumens): 45 minutes / 104 meters• Low (50 lumens): 1.75 hours / 52 meters COB FLOOD LIGHT• On (100 lumens): 1.5 hours / 14 meters COB RED LIGHT• On (15 lumens): 8 hours / 5 meters DESIGN• Fully rechargeable• Compact and lightweight• Durable ABS and aluminium construction• Water resistant (IPX4)• Turbo mode included OPERATION• Top-positioned buttons for power and mode selection with charging indicator ACCESSORIES• Micro USB to USB charging cable included• Adjustable headstrap BATTERIES• Powered by 300mAh 651730 Lithium Poly rechargeable battery (included) SPECS• Weight: 53g (inc. strap)• (L) 65mm x (W) 28mm x (H) 32mm Independent Sail World Review