VISIBILITY & SAFETY: There are two modes about our LED light, white light lighting mode you can see clearly and the red and blue light flashing alarm mode make you more in the dark night. USB RECHARGEABLE: Recharging from the standard USB port of computer or mobile phone charger, 2 pcs lights charging alternately to save time. EASY TO INSTALL: No need to change new batteries for your beanie, only remove the headlight and replace it. SIMPLE TO USE: Pressing the button in the middle of LED light to switch on/off. FIT FOR: it is perfect flashlight beenie for camping, cycling, grilling, auto repair, fishing, jogging or walking with dog in the cold winter night. Length: 6.5cm/2.56inch colour:Black Material:plastic Package Contents: 2 x headlight Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.