6x A10, PR70, 1.45v Zinc air Hearing aid batteries by Rayovac.
eBay
Rechargeable Noise Cancelling Hearing Aid for Elderly, Sound Amplifier for Hearing Loss, BTE Hearing Aid with Volume Control
Aliexpress UK
ALSO KNOWN AS: AC312, ZA312, PR41, V312, DA312. 312 / BROWN.
eBay
Bluetooth Hearing Aids for Seniors Rechargeable with Noice Cancelling Phone Control RIC Dual Microphone APP Hearing Test Music
Aliexpress UK
40 xRayovac Hearing Aid Batteries.
eBay
Hearing Aids for Seniors Rechargeable Hearing Amplifiers with Noise Cancelling Hearing Aid Mild to moderate hearing loss
Aliexpress UK
80 xRayovac Hearing Aid Batteries.
eBay
hearing aid rechargeable RIC Hearing Aid for Middle-Aged And Elderly High Volume Behind-the-Ear Hearing Device
Aliexpress UK
Rayovac Extra Hearing Aid Batteries. 🟡 Rayovac Extra Size 10 – Yellow. 🟠Rayovac Extra Size 13 – Orange. 🟤Rayovac Extra Size 312 – Brown. 🔵Rayovac Extra Size 675 – Blue. With a consistent power output and user-friendly yellow tab, they’re designed for easy handling and dependable performance in smaller digital aids.
eBay
Hearing aid headphones for the elderly improve hearing, protect hearing loss and tinnitus, and are single-ear hearing AIDS
Aliexpress UK
Duracell Activair Hearing Aid Batteries provide the quality, reliability, and long life required by those who suffer hearing problems. Hearing Aid Batteries. Colour coded to make sizing easier, and with Easy Tab for fitting, choosing the correct size, and replacing a Duracell Hearing Aid Battery is simplicity itself.
eBay
2/12/50PCS R-Shaped Hearing Aid Tubes Flexible Type R BTE Earmold Hearing Aid Tubing from 3.1 mm for Hearing Aids Amplifier DIY
Aliexpress UK
Other designations: 312, PR41, DA312. RAYOVAC® spent over 110 years thinking about batteries so you can think about them less. 100% authentic, original Rayovac product. Battery size: 312.
eBay
New Rechargeable Digital Hearing Aid Adjustable Tone Best Sound Amplifier Portable Deaf Elderly BTE Hearing Aid
Aliexpress UK
32 xRayovac Hearing Aid Batteries.
eBay
Portable V-99 Body Hearing Aid for The Elderly Hearing Loss Sound Amplifier Adjustable Tone Digital Hearing Aids Recharged
Aliexpress UK