1.: One button for power on/off and one button for 5 grades volume control, it's very simple to use for the elderly. 2.Comfortable Wearing: Compared with the previous generation, we have updated the design of hearing aid shell and charging base, you will get a firm and comfortable wearing experience, you can pack it easily to pocket for hanging out and charge on the go. 3.Rechargeable Convenient: The high quality hearing amplifier is rechargeable with type C magnetic charging and feature a 35 hours battery life with a 2 3 hours charging time. Comes with full charging kits magnetic charging dock, power adapter and charging cable. 4.Good Sound Quality: This hearing aid is suitable for the people with mild to moderate hearing loss. You will get effective sound amplifying with 5 grades volume control according to your needs and different usage scenarios, no more missing out on TV watching, conversations with friends and family.