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