2 in 1 design, short press button to turn LED headlights on, long press button to turn SOS on 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 The angle of light source is adjust from 0 to 45 degree to meet different needs 1080P (1920x1080) highly definition camera allows you to freely any clear and wonderful moment