specification：
Name: Baseus Open-Ear TWS Earbuds
Model: PM138
Bluetooth Version: V5.4
Communication Range: 10m in open environments
Battery Capacity: 48mAh/0.185Wh (earphones), 600mAh/2.22Wh (charging case)
Input: 5V⎓1A
Output: 3.8-5V⎓240mA (120mA per port)
Frequency Response Range: 20Hz-20KHz
Wireless Frequency Band: 2400MHz-2483.5MHz
Charging Port: Type-C
Compatibility: Bluetooth-enabled playback devices
USP：
1.AI Bass Enhancement Algorithm
2.Comfortable Wearing
3.40-Hour Battery Life