- Type of microphone: Large size microphone with a diameter of 10mm-2. Speaker unit: 76mm; power: 5W-3. Bluetooth 5.4; Chip: Blue trum AB5702B-4. Battery capacity: 1200mAh; Charging time: 2 hours; Working hours: approximately 4-5 hours-5. Supports wired microphone amplification, recording playback, Bluetooth, USB flash drive, TF card, AUX playback-6. Material: ABS; Size: 88 * 122 * 53mm; Weight: 180g