Feature: 1. Large ranges of light, avoids too strong dark contrast to stimulate the eyes, suitable for work and study, make you more comfortable. 2. Four-dimensional lighting visual effect, more cool. 3. Comfortable head, adjustable length, suitable for all kinds of working and living environment. 4. Power display function, easy to adjust the chargings time. 5. IPX4 waterproof and you don\u0027t have to be afraid of rain. Specification: This lamp is worn directly on your head, liberating your hands, waving the sensors switch, even if the hand is inconvenient to touchs it can be controlled. Features: Large ranges of light, avoids too strong dark contrast to stimulate the eyes, suitable for work and study, make you more comfortable. Four-dimensional lighting visual effect, more cool. Comfortable head, adjustable length, suitable for all kinds of working and living environment. Power display function, easy to adjust the chargings time. IPX4 waterproof and you don't have to be afraid of rain. Specifications: Maximum brightness: 350 lumens Exposure area: > 50㎡ Chargings mode: USB Chargings time: 4H Battery: 1200mAh Function: strong light - weak light - flash Waterproof: IP4 Powers: 10W Package size: 100 * 55 * 35mm / 3.9 * 2.2 * 1.4in Package weight: 230g / 8.1ounce Packing List: 1 * Headlamp 1 * USB Cable Package List: 1 * Headlamp 1 * USB Cable