Description:1. In the event of overload or short circuit in the device, the protection circuit may cut off the power supply to the battery, and the protection battery is not easy to damage2. When the battery voltage is lower than 2.7V, the protection chip cuts off the battery power to protect the battery from damage by over-discharge, and the LED and radio do not work. When the machine is used for the first time or not used for more than 60 days, put it under a strong solar lamp (sunlightgt;86000LUX) for 30 minutes to charge the built-in battery to regenerate the battery.2. When using this device, do not over-discharge, so as not to shorten the battery life of the device or even damage the battery in the device.3. Only use a soft damp cloth to clean this product, do not use alcohol or other corrosive liquids to clean this product.4. Avoid direct light from the eye flashlight as strong light will harm your eyes. Specification:Name: 1200mAh Solar Powered Crank Emergency RadioFrequency Range: AM: 520-1710KHz, FM: 87-108MHzPower Consumption: 3W (max)Working Voltage: 2.7V to 4.2V Power Supply: 1200mAh/3.7V Li-ion LED Flashlight: 1W*3LED/100lmAM/FM SupportSize: 128*60*45mm/5.0*2.4*1.8inch Packing List:1 * Remote Fault Information1 * USB Cable1 * User Manual