1.Rechargeable, no need to change batteries.2.Suitable for the elderly hearing loss.3.Easy to operate, easy to use.4.Adjustable volume, which can be adjusted according to different occasions.5.Separate wire and headphone, more convenient and safe.6.The Walkman design makes it easy to carry and fits into your pocket or . 7.Full use of the ear structure to design the appearance of the hearing aid, which makes it perfectly fit wearer's ears for a comfortable wear. 8.Helps to amplify sound with low background noise, you can discover the pleasure of gathering with friends and family, more confident at work and enjoying , music and TV programs.9.You can hear clear and natural sound, no embarrassing, no when seeing and visiting your relatives, friends. 10.Simple to use, no complicated and operation, specially designed for the . 11.Three can be standby for a month, which is super power efficient.12.A bone conduction headphones with two earphones.Model Number: Bone Conduction Headphones Item Type: Ear Care Type: Cassette Hearing Aid Power supply mode: Rechargeable Item: Headphone hearing aid Function: Sound Enhancement, Noise Sound If you 's difficult to hearing very well from others, a hearing aid can help you regain your hearing so you can live the life you are used to. This hearing aid is specially designed for the hearing losing people. Wearing it, you can discover the pleasure of gathering with friends and family, more confident at work and enjoying , music and TV programs. Item Type: Bone Conduction Headphones Maximum level: Less than 129dB+3dB Output sound pressure: 120dB + 4dB Full sound gain: 40dB + 5 dB Frequency response range: 450Hz-3000Hz harmonic distortion: Less than 10% Equivalent input noise level: Less than 32 dB Charging time:6-10h Continuous working time: 12-18h Function: Sound Enhancement, Noise Sound Blocking Adapt to the crowd: Mild hearing loss group colour:black Material:ABS + Silicone size:95*40*7mm Package Contents: 1 * Amplifier 1 * Headset 2 * Pairs of Earplugs ( Different Size ) 1 * Charging Line 1 * Instructions Note: If the squeak is happening, switch off the headphones first, then adjust the both volume to minimum, switch on the headphone again, and adjust the volume higher to appropriate again. Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.