•Special noise reduction feature for seniors that helps them hear more clearly. Touch switch, turn it on and start using it, no additional settings required. •Dual AI noise reduction chips, delivering stable and clearer sound, with active identification to eliminate noise and suppress hiss. •Integrated touch controls on the side of the device: Switch between sound amplification and Bluetooth headset, control volume, control playback (play, pause), and answer or reject calls. •Automatic connection (once paired on first use). With Bluetooth 5.3 latest generation with low consumption and long range. In addition, it has a high-capacity battery with up to 5 hours of battery life. •Includes Micro USB charging cable x1, instruction manual x1, earphone amplifier x1. nBluetooth version: 5.3 Bluetooth distance: about 10-15 meters Protocol: A2DP / AVRCP / HFP / HSP Battery: 35mAh Charging time: about 2 hours Phone call and music listening time: about 5 hours Impedance: 32Ω Total harmonic distortion: 1K/5%. Frequency response range: 20Hz - 20KHz Nominal voltage: 5V Call sensitivity: 42dB/+3dB CE and RoHS certified. ABS, metal alloy, PET.