*Sole Innovative Invention: " Rechargeable" & " Digital" type
* Rechargeable - Over 1000 times compact and easy-carry set people free from replacing all those fiddly hearing-aid batteries
* Digital- use balanced- armature class D speaker to give high sensitivity

Specification::
* Deft miniature hearing aid with low distortion, noise
* Volume can be adjusted to all condition
* Frequency Response Range: 2500 Hz
* Equivalent input noise level < 29dB SPL
* Battery: Rechargeable ML 1220 for 12 hrs use per each charge
* Total Harmonic distortion value of reality :
2500Hz: below 3%
800Hz: below 4%
500Hz: below 4%
* Highest sound pressure level for input SPL 90dB: 118 ?dB Below 125dB

Remark :
* Worldwide Patented: UK, Taiwan, Japan, German, China, Australia
* CE Medical Approved : No: CE 0434