Power supply: 2.1 interface DC 8~25V power supplyChannel: 2*50w dual channel (stereo)Audio source input: Bluetooth connection stereo input, using CSR8633 Bluetooth chip, Bluetooth V4.0Output impedance: 8 ohms (can drive 4, 6, 8, 16 ohm impedance speakers)Output power: adding the front-end NE5532 output power is sufficientDIP switch: It is more convenient to directly adjust the gain of the power amplifier of the subsequent stage, and it is better to push the loudspeaker with larger damping
供电方式：1.锂电池18650 3.7V 2.Micro USB 接口供电：5V最大工作电流：2A工作温度：0~85℃
Product model: HW-818Charging Voltage: DC 16.8-17.8VContinuous discharge current: maximum 40A (if heat dissipation environment is not good, please reduce the use of load current)Continuous charging current: maximum 20AProduct size: 45*60*4mmApplicable selection: suitable for lithium batteries with nominal voltage of 3.7V and charge of 4.2V(Including 18650, 26650, polymer lithium batteries) with electric drill below 170W