ES37 Treasure song wireless headset with mic, BT V5.0, 55mAh headset battery for 7 hours of calls and music and 200 hours of standby charging case battery 2600mAh.
1. BT specifications: BT V5.0 Jerry 6936D.
2. Charging time: 1.5 hours (headset), 2.5 hours (charging case).
3. Battery capacity: 55mAh (single headset), 2600mAh (charging case).
4. Sizes: 87 * 52 * 30mm, weight 104g, single headset weight 5g.
5. Calls / music time: 7 hours. Standby time: 200 hours.