Portable Charging Case - The protection box has built-in 300mAH battery, which is convenient for charging the earphone through magnetic contact anytime and anywhere. It can be used for 10-12 hours after charging 2 hours, lasts longer than other types of device.
SOFT & ELASTIC EAR PLUGS
How to Prevent device falling?
Clean your device regularly to prevent build-up of wax.
Keep the device functioning properly.- -
LONG PRESS (3 SECONDS)
1) Why there are some background noise?
Actually, it is the electric current sound existing in all good machines. Generally, the higher the power, the greater the static sound.
√ Turning on after put it in ears, then turn up the sound gradually. Generally, You will get used to it after 2-3 weeks.
2) What causes the squeal?
If the ear dome is not inserted well into ear canal or air leaks at the ear dome edges, when the device is close to hand or wall, a certain amount of sound will go back into the microphone. The sound is re-amplified which causes that annoying whistle.
√ Try and select suitable ear dome. Put the ear dome into the ear canal and make sure it fits snugly inside.
3) Can\'t Charge Normally？
√Slightly adjust the position of hearing amplifiers for a perfect connection.
√The projector light turns BLUE when it is connected well; the light turns WHITE when it is fully charged.
4) Why the worked pretty well for a few days but a few days latter them do not work？
√Please make sure the device were fully charged.
PLease noticed that the device that you were having problems with. Whether there is earwax on the earplug? Once you cleaned that, they will work better.Listings for hearing aids must include the following FDA disclaimer:
\"According to the FDA, it is in your best health interest to obtain a professional medical evaluation before purchasing a hearing aid and you are encouraged to do so before offerding on this item. If you choose to not obtain a medical evaluation before purchasing this item, I am required by law to provide to you and obtain from you a signed written waiver of the medical evaluation, and I am required to provide to you a copy of the User Instruction Brochure for a hearing aid, review the contents of that brochure with you, and afford you time to read the brochure. You must provide to me either a signed statement from a physician or a signed waiver before I will deliver this item to you. Upon your request, I will also provide to you a copy of the User Instructional Brochure for the hearing aid or the name and address of the manufacturer or distributor from whom a User Instructional Brochure for the hearing aid can be obtained.\"