Adapter 5V 1A X1 Boost X2 Eco X3 Standby Red LED Flash Function loop Standby Eco OFF Boost @25℃ 60RH *Charge at a very low temperature such as blew 0℃,will be get a lower capacity and reduce cycle life of the battery. @25℃ 60RH (Up to) 130lm 70lm @25℃ 60RH (Up to) 2.5hrs 4.5hrs Micro USB 100~240V AC 4 Step 1. Lamp and headband prepare stable Adju nd Ba Step 2:Clip the indicated band to the lamp Rotated Base Step 3: Clip the indicated band to the lamp Rotated Base ble usta Adj nd Ba (Full Charged) 1A V 12 Head Band:Gray color outside Blue color inside Charging time 1H ° 90 Boost 2.5hrs Eco 4.5hrs Micro USB Charging cable