1. Chip: jerry's solution (5.0)

2. Effective distance: 10 meters

3. Horn: real copper ring horn, horn 0.3-0.5 milliwatt, frequency response 100HZ -- 10KHZ

4. Battery: pure cobalt battery, 55mah earphone charging box 600mah

5. Playing time: 3-4 hours for one ear and 2-3 hours for two ears

6. Standby time: 60 hours for a single ear and 40 hours for a pair of ears

7. Charging time: 2 hours for headset and 2 hours for charging box

8. Color: white

9. Carton size: full carton 52*42*20cm, full carton weight 12kg
Single package size 10*10*3.5cm single weight 110g 100 pieces per carton