Waterproof Rechargeable Bluetooth Hearing Amplifier Digital

Description: Headphones category: Assist headphones bluetooth version: bT5.0 Transmission distance: more than 10 meters Frequency range: 20Hz-20KHz Music playback time: Standby for more than 3 days, Use for more than 15 hours Hearing playback time: Standby for more than 20 hours. Use with more than 16 hours Charging time: 2 hours Feature: bluetooth version: 5.0 Wearing method: in-ear Mode of operation: push-button Communication function: support Appearance size: 22x55x8mm Applicable people: business, old people, fashion, public Package included: 1X charging cable 1X manual 1X Hearing aid