The CHOSGO hearing aids for adults are self-fitting, app-controlled, Bluetooth hearing aids [https://chosgohearing.com/products/mobile-app-control-ric-hearing-aid-devices-bluetooth-otc-hearing-aids]. Paired with the powerful, control ha app, the CHOSGO is fully customizable to your own unique hearing loss. One pairs. Bluetooth: Adjust the sound level by the touch of a smartphone (CONTROL HA) to get your perfect fit in minutes! Background Noise Reduction: Control the sounds that you want to hear with four listening programs and ten volume levels. Nearly Invisible: Nobody will even notice your BTE, lightweight, 40dB gain, hearing aid when you wear it. Product Features: Get 48% OFF & excellent after-sales service OTC/FDA Registered Hearing Aids (Pair) Bluetooth APP control-easy to adjust the fit sound. Excellent sound quality-natural and wonderful hearing experience Four (4) program settings – quiet, noisy, conversation, outdoors Auto noise management - reduce distracting background sounds Dual microphones for better directionality Easy up / down volume control-Greater amplification for moderate hearing Easy battery replacement,312A - up to1-2 week 45-day risk-free trial & 100% money-back guarantee