2. Effective distance: 10 meters

3. Loudspeaker: composite membrane aluminum ring, 0.3-0.5 milliwatt, frequency response 100HZ -- 10KHZ

4. Battery: pure cobalt battery cell, headset 55mah charging box 400mah

5. Playing time: 2-3 hours for single ear and 1.5 to 2 hours for opposite ear

6. Standby time: 40 hours for single ear and 30 hours for opposite ear

7. Charging time: 1 hour for the headset and 2 hours for the charging box

8. Color; white

10. Single packing size: 10*10*3.5cm; single weight: 120g; each box: 100 pieces
11. Carton size: 52*42*20cm for the whole carton, weighing 13kg for the whole carton