Has smart noise reduction; Emits a clearer timbre; has an adjustable volume key
Invisible to wear; earbuds are lightweight as a feather; Rechargeable by USB and adapter
Charging time: 4-8 hours / Working time: 11-16 hours / Equivalent noise level: less than 32
Mainframe size: 40 x 35 x 8mm / Mainframe weight: 7g / Total harmonic distortion: 8%
Package inclusion: 1 Invisible Hearing Aids Adjustable Volume, 1 x USB charger, 1 x Manual, 3 x various sizes of earplugs, and 1 x Certification
Note: The product now only come with China charger, if use in Europe, Australia or other area,please use your phone adapter to charge .