1. Gain: about 30dB 2. Frequency response range: 400 - 4500Hz 3. Rated voltage: 3.7V 4. Input: DC5V 1A 5. Atmospheric pressure: 86kPa-106kPa 6. Battery capacity: 50mAh for earphones, 300mAh for charging case 7. Charging port: Type-C
Features: 1. In-ear design, no blockage, no stuffiness, comfortable and hygienic 2. 3ms response, no delay 3. 35db large gain is suitable for people with mild, moderate and severe hearing loss 4. Adaptive scene, noise reduction adjustment, automatic recognition and switching of user scenes, elimination of background noise, suppression of sudden loud sounds 5. Adopt Hall switch and fingerprint touch control to prevent accidental touch and ensure more accuracy 6. 5-level volume fine-tuning to meet different hearing loss needs
