1. Gain: about 48dB
2. Frequency response range: 400 - 4500Hz
3. Rated voltage: 3.7V
4. Input: DC5V 1A
5. Atmospheric pressure: 86kPa-106kPa
6. Battery capacity: 65mAh for earphones, 300mAh for charging case
7. Charging port: Type-C
Features:
1. Intelligent 64 channels, more refined sound processing
2. Quickly and clearly process sound, eliminate environmental noise and electrical noise, and ensure hearing health
3. Adapt to different degrees of hearing loss, you can accurately adjust the volume to the appropriate level according to your needs, ensuring that even loud sounds will not sound too noisy
4. Compact in-ear design, 175-degree L-shaped body design
5. Digital display charging box, easy to check the power
6. IPX4 daily waterproof design
7. One-button operation, convenient and simple