Wireless Bluetooth Speakers, Outdoor Waterproof Portable Silicone Mini Speaker - Indoor Stereo ,Appearance Patent-Green

Description

1. Output power: 3W / 4 Europe 2. Working voltage: 3.7V 3. Battery capacity: 300mah 4. Audio signal to noise ratio:> 80dB 5. Continuous playback time: 2 hours (maximum volume sound) 6. Charging: Power DC 5V / 500mA or computer standard USB interface