Product parameters.Product ModelT139+COBProduct bulb]: P160 (theoretical life: 100,000 hours)Switch type: press switch at the headlightWorking gear: main light P160 strong light, low light, flashing, - auxiliary light is always on (auxiliary light can be adjusted up and down)[Light color]: white light at the head, red warning light at the end of the battery compartmentWaterproof level]: IPX5 (rainproof, splash-proof water)Working voltage: 3.7VProduct MaterialAluminum alloy + ABS[Charging mode]: micro USB charging support power outputZoom mode: head telescopic zoomSurface treatment: wear-resistant anodic oxidationApplicable batteries3*18650 (not included)Product Net Weight270GProduct gross weight]: 349G (headlamp + USB cable + color box)[Set weight]: 477G (headlamp + 3 * 18650 battery + USB cable + color box) standard batteryPackage size]: Color box: 11.5 * 11.5 * 10cmProduct selling point.Machining center precision carving process, segmentation current, easy heat dissipationLarge lens, large aperture, wide irradiation rangeBattery compartment input and output function, can do mobile charging treasure, battery compartment with charge display, 4 LED display lights, each LED with a table 25% powerHeadlamp with increased anti-slip belt, non-slip and comfortable, no pressureWarm reminder.This section with current protection, if the battery power is too low will automatically power off, to protect the battery will not be too low voltage and can not be charged, at this time timely charging can be, shall use 3 18650 at the same time for power supply. (Note: please use 3 pointed batteries, flat batteries can not be used, not contact)