High powerled headlampand Bicycle lamp Description Description of high power led headlamp: * Materia: Aerospace-grade aluminum body with anti-scratching typethird hard anodization * Modes: Low/medium/High/Strobe * Color: black/Metal grey * The driver circuit:Intelligent digital circuits control,three gear dimming circuit. 1).Bright File:current 2800mA,brightness 900LM 2).MediumFile:current 2100mA,brightness 500LM 3).LowFile:current 1500mA,brightness 200LM 4).Strobe file :current 2800mA,brightness 900LM * LED: Adopt SSC High Power LED W724C led * Luminous Flux: 900 Lumens * LED Life Span: 50,000 hours * Battery: 8.4V 4400mAH 4pcs lithium batteries including * Run Time: 180 minutes (100% brightness) * Charge Time: 3.5-4.0H * Low Power Warning: low power red light warning * Lighting Modes: 100% brightness & 50% brightness & 30% brightness & flashing(2.4HZ) * Waterproof Grade: IP65 Dimensions: * Size: Φ43*50MM * N.W.: 0.42KG * G.W.: 0.67KG for full set Regulations: *Battery type: 4pcs 18650 battery pack *8.4V/1A The OS-B900 led headlamp, it is powered by 4pcs 18650 battery pack, it isalso most suitable for bicycle lamp. The price for one setprice including1)Bicycle lamp: 1 pcs 2) Charger: 1pcs 3)Battery pack: 1pcs 4) O-Rings: 2pcs5) Headlamp tape: 1pcs6) Helmet band: 1pcs(opitional) 7) Instruction: 1pcs 8) Color box: 1pcs Welcome to inquiry and OEM service.