WS-1818 LED Light Flashing Microphone Self-contained Audio Bluetooth Wireless Microphone 1. Reverb mode: echo effect with reverb 2. Material: ABS, metal 3. Charging power: DC5V 4. Battery capacity: 1200mAh 5. Use time: about 3-6 hours 6. Pickup: condenser type 7. Sound channel: 2.1 8. Frequency range: 100Hz-10KHz 9. Bluetooth: 5.0 10. Size: approximately 24.5 x 7.7 x 6 cm 11. Weight: approximately 400g Features: 1. Bluetooth 5.0 wireless connection, easy to operate 2. Multiple playback modes, supports memory card and headphone audio connection 3. Multi-layer noise reduction, effectively reduces background noise, enhances original sound clarity 4. Three-layer filter head, metal frame, mid-density mesh, rich reverberation 5. Dual side speakers, 360-degree stereo sound 6. Compatible with iOS and Android systems, supports major karaoke applications