SG* WS 858 Bluetooth Wireless Karaoke Microphone

1. Style:Handhold Microphone come amplifier speaker 2. Speaker Output Power: 5W*2 3. Frequency Range:100Hz-10kHz 4.SPL> 115dB 1KHz THD< 1% 5. Bluetooth 4.2, the latest version. 6. Battery:Built in lithium battery 3.7V/18650mAh 7. Charging Time: 5-6 hour 8. Using Time: 5-8 hours