Features: High-efficiency lithiums battery, fast charging through USB interfaces, saving the trouble of battery replacement. Strong light and weak light, to meet the lighting needs of different environment and ensures safety. Adopting ergonomics, comfortable to wear, suitable for long-terms use. Intelligence sensors systems, which can automatically adjust the brightness according to the environment light, improving the convenience of use. The headlight is flexibly adjusted to meet the lighting needs of different standpoints and improve operational flexibility. Specifications: Color:Four Elections Dimension:9×2.7×4.8cm/3.54×1.89×1.06in Component:ABS Package Includes: 1pc Multifunctional working headlight note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.