1. Wireless V5.0 AB1526P.2. Support protocols – Headset, Hands-free, A2DP, Avrcp.3. Charging voltage is DC5V. Charging time is about 1 hour.4. Charge box battery capacity is 400mAh, left and right earphone battery capacity is 35 mAh each.5. Call and music time is 2.5 hours, standby time is 200 hours.6. Size: 54*44*21mm, weight: 34g (including charging case), bare weight: 3.8g (single earphone).7. Battery capacity display supported for Apple phones and some Android phones.