USB rechargeable hearing aid for both ears, easy to operate and convenient. - Type: USB rechargeable hearing aid - Compatibility: For both ears - Charging method: Can be charged directly from a computer or outlet - How to use: Attach the ear tips and turn on the power - Charging status indicator: Red light during charging, green light when charging is complete Purchased from a hearing aid shop and used once, but it didn't suit me, so I'm selling it.