Product Introduction Video
Characteristics
Easy volume control with remote control
Fits perfectly
and inconspicuous!
Ultra-compact type
Ultra-compact design that fits snugly inside the ear Width 9 mm x Depth 17 mm x Height 13 mm
Dedicated left/right shape
Comfortable to wear
Separate left and right shapes to conform to the shape of the ear. It fits snugly in the ear and is inconspicuous.
Newly developed click sleeve
earplugs
Special shape curved to fit the curvature of the ear canal. It is designed to easily transmit sound close to the eardrum and to reduce fatigue even after prolonged use.
Easy volume control with remote control
■Remote control included
The volume can be adjusted with the simple touch of a button.
Simple buttons and easy to use
There are three main buttons. It is easy to understand yet multifunctional. The operation is notified with a sound.
At 33 mm in width and 56 mm in height, it fits in the palm of your hand.
Just the right size, not too big and not too small
Please use it with your favorite key chain or string.
Loss prevention key ring
■48段階音量調節
The volume can be adjusted with the simple touch of a button.
■テレビモード搭載
The volume can be adjusted with the simple touch of a button.
Natural sound quality and high functionality
Natural and smooth sound quality
OHS-D31 processes the sound into 12 divisions (OHS-D21 / EH21 into 8 divisions). The more divisions, the smoother the sound.
Noise suppression
The OHS-D31 uses 12 channels of digital processing (the OHS-D21 / EH21 uses 8 channels of digital processing) to separate noise and voice. This reduces the noise portion, making it easier to hear the voice even in noisy places.
Howling suppression function
Suppresses unpleasant beeping sounds. Quickly suppresses only howling sound without attenuating the audio through a mix of inverse phase method and frequency shift.
Sound Technology
(1) Suitable for a wide range of hearing abilities, from mild to moderate.
-
Soft sounds and whispers are hard to hear.
-
People say the TV volume is too loud.
-
It's hard to hear normal conversation.
-
You only notice when a car pulls up beside you.
This is just a guide. Feelings will vary depending on the individual.
Sound Technology
Silent Start
After inserting the battery into the hearing aid, it will turn on after 6 seconds. During this time, securely placing the hearing aid in your ear helps prevent unpleasant feedback (beeping sounds).
Automatic volume control
Non-linear function. Loud noises that are difficult to hear are amplified, while loud noises caused by vacuum cleaners, washing machines, etc. are suppressed. Loud sounds are automatically adjusted to be clearer and loud sounds to be softer.
Volume control function
Digital processing automatically controls the sound coming out of the hearing aid to the appropriate level. This reduces the sound distortion that occurs with conventional analog hearing aids when listening to loud sounds, resulting in a more natural sound.
Notification of battery replacement time
When the battery runs out of capacity, it will periodically announce this with a "beep-beep-beep" sound.
Includes earwax-preventive filter
An ear-dust prevention filter attached to the hearing aid body prevents ear-dust from entering the hearing aid.
OHS-D31 Set Contents
64,800 yen
Suggested retail price (tax-exempt)
Color: Beige
Weight: 0.9g (excluding battery)
Battery Type: Air Battery PR41
Maximum Battery Life (approx.): 150 hours
Accessories: Ear tips (large, medium, small, free-fit), Remote control smart key1, 1 button battery, Cleaning brush, Cosmetic case
Warranty: 1 year (WS Audiology Japan Co., Ltd.)
For left ear / For right ear
The image is for the right ear.
119,800 yen
Suggested retail price (tax-exempt)
Color: Beige
Weight: 0.9g (excluding battery)
Battery Type: Air-Zinc Battery PR41
Maximum Battery Life (approx.): 150 hours
Accessories: Ear tips (large, medium, small, free-fit), Remote control smart key1 (one remote for both ears), 1 button battery, Cleaning brush, Cosmetic case
Warranty: 1 year (WS Audiology Japan Co., Ltd.)
For both ears
Trial Rental
OHS-D31 is available for trial rental. Only OHS-D31 for both ears is available for rental.
Please apply from the rental operator's website below.
Trial Rental
補聴器の電池を交換する方法
補聴器の装着方法・取り出す方法
耳せんについて
音量の調節方法
故障かなと思ったら
Manual Instruction Manual
*The contents of the instruction manual are subject to change without notice. Therefore, the contents of the instruction manuals on this website may differ from the contents of the instruction manuals included with the products you have purchased. We appreciate your understanding in advance.
Inquiries about hearing aids
For inquiries about hearing aids and accessories, please contact the following
【Onkyo Hearing Aid Support Center】
TEL 0800-000-4133
Reception Hours: 9:00 AM to 4:00 PM, excluding Saturdays, Sundays, holidays, and designated holidays.(Please note that reception hours changed effective July 1, 2025.)