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FREE SHIPPING1- Safe and Durable.2- Cycle Charging.3- Glare Light.4- Super Power.Features 1. The product is charged with 5V (400mA 4000mA) voltage which is safe and convenient. It can be connected to mobile phone charger, computer USB socket, charging treasure, USB socket and so on. 2. The product adopts imported high-flexible LED chip low energy consumption, no stroboscopic low light decay. and care for both eyes. 3. The high-quality hose is free to stretch and it iS more convenient to study and use. 4. The product is divided into two types built-in rechargeable, maintenance- -free high- capacity lithium battery and no lithium battery. material: 1, PP+LED light+ lithium battery 2. PP+LED light.Instructions for Use: 1. Insert the product USB plug into the phone charger, computer USB slot, charging treasure or USB socket. 2. The indicator light is red when the product is charging, and the full power indicator is green. 3. When using press the touch switch, a low light, a second strong light, and a third strong light. Place the lamp in the proper position and adjust the hose and shade angle.Precautions: 1.  Do not look directly at the lamp illuminator for a long time. 2. Do not twist the lamp cover frequently or hard. 3. Please avoid working for a long time, take a proper rest. 4. During use, when the LED bulb is dim, at this time to protect the battery, it should be stopped, and must be charged in time. The battery should not be charged for long time. The maximum charging time cannot exceed 24 hours, if not used frequently. Please recharge the battery once every three months, otherwise it will reduce the battery life. 5. Do not expose this product to rain or moisture.