Mini Hearing Aid: The weight of the product size is 13*5*26mm, it is comfortable to wear and easy to carry. Bluetooth function: This is a bluetooth hearing aid specially designed for the elderly and adults, experience the world of enhanced sound. Perfect for TV, streaming music, and hands-free calling, enjoy crystal-clear audio quality with just one device. Charging function: the hearing aid can be charged through the data cable, the charging box is fully charged in 2 hours, and it can run continuously for about 20 hours after being fully charged, which is very environmentally friendly. Sound Quality Features: The hearing aid has full digital sound quality, no background noise, reduces surrounding noise, enjoys wonderful sound effects, and can achieve low audio distortion and clearer sound. Non-contact switch machine: put in the charging box to turn off, take out the charging box to turn on.