Product name: COB headlight Maximum lumen: 350 Lum Irradiation area:> 50 square meters Power: 10w Lamp beads: COB＆XPE Battery: 1200mAh lithium battery Charging method: USB Function: strong light-weak flash-wave Charging time: 4h Waterproof rating: IPX4 Use time: 3-8h Packing size: 55mm×35×100mm The above data is for reference only, subject to factory inspection data About Guarantee 1.With Domestic Returns you get an extra 15 days, on top of the order completion date, to decide if you want to keep or return the item.if you have any problem,please contact us for help. 2. 6 months Manufacturer's limited Warranty for defective items (excluding items damaged or misused). 3. Defective items must be reported and returned within the warranty period. About Feedback 1. Please contact us before you open dispute,we will resolve your problem. 2. Please contact us before you decide to leave negative feedback.We will give you best solution.