1. Power: 2W 2. Range of use: 1-10 floors 3. Number of channels: 16 4. Theoretical communication distance: 2km 5. Working voltage: 3.7V 6. Frequency stability: 2.5ppm 7. Small shape, easy to carry when going out 8. Dustproof, waterproof and dropproof, sturdy and durable 9. Intelligent power-saving lithium battery + USB convenient direct charging 10. 1500mAh 3-8 days super long standby 11. LCD display high-definition display power 12. 36mm large speaker, intelligent noise reduction, clear sound without noise 13. Portable back clip, hands-free, specially designed for the service industry 14. Weight: 58 grams 15. Dimensions: 8.7x4.5x2 cm
