Package List: No Battery:without battery 3600mah:with 3*1200mah 18650 batteries 7800mah:with 3*2600mah 18650 batteries Product parameters: Product model: XH100(9 cores) /XHP160 (16 cores) (theoretical life: 100,000 hours) Switch type: Press the switch at the lamp head Working mode: 3 modes: strong light, weak light, and flashing Lighting color: white light on the lamp holder, red light on the rear of the battery compartment Waterproof rating: IPX5 (anti-drenching, anti-splashing) Working voltage: ≥3.7V Product material: Aluminum alloy + ABS Charging method: micro USB charging support power output Zoom mode: Head telescopic zoom Surface treatment: wear-resistant anodizing Applicable battery: 3*18650 (optional) Product Net Weight: 298G Features: Segmented current, easy heat dissipation Large lens, large aperture, wide range of illumination Battery compartment input and output function, can be used as a mobile power bank, battery compartment with power display, 4 LED indicator lights, each LED with 25% power display. The headlight belt adds a non-slip belt, which is non-slip and comfortable without pressure Warm reminder: This model is equipped with current protection. If the battery power is too low, it will automatically cut off the power to protect the battery from being too low and fail to charge. At this time, charge it in time, and you must use 3pcs 18650 batteries for power supply. (Note: Please use 3 pointed-head batteries, flat-head batteries cannot be used)