The angle of light source is adjust from 0 to 45 degree to meet different needs 2 in 1 design, short press button to turn LED headlights on, long press button to turn SOS on Use low lighted lens, it can also be recorded in dark environment, with distance of 5-10m Wearable design, highly elasticity headband, sweat wicking and nonslip, very suitable for outdoor sports Build in 1000mAh large capacity battery, long working time up to 6 hours, and can connection to external mobile power