5 out of 5
Serene Innovations SA 40 HearAll Cell Phone Amplifier SA-40
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Product Description
Serene Innovations SA 40 HearAll Cell Phone Amplifier SA-40
OVERVIEW
Looking for additional volume on your cell phone? With the SA-40, you can hear every word, even in noisy environments. No more muffled words or straining to hear! With amplification up to 100 times louder (40dB), tone control and t-coil mode, you can understand the conversation, with or without your hearing aid!
Additional Details
MANUAL
- Pairs with any Bluethooth® cell phone
- 40dB amplification, ideal level for those who are constantly asking the caller to repeat themselves
- Tone control defines and enhances sound quality
- Padded speaker grill for added comfort and background noise isolation
OVERVIEW
Looking for additional volume on your cell phone? With the SA-40, you can hear every word, even in noisy environments. No more muffled words or straining to hear! With amplification up to 100 times louder (40dB), tone control and t-coil mode, you can understand the conversation, with or without your hearing aid!
Features:
- Wireless handset that pairs with virtually any Bluetooth® cell phone
- Range approximately 30 feet between HearAll and paired cell phone
- 40dB of amplification allows you to hear ever word, even in noisy environments
- Adjustable tone control allows you to select the best frequency for your hearing loss
- Latest Digital Sound Processing, technology eliminates static and distortion
- Padded speaker for comfort and noise isolation
- T-coil mode sends sounds directly to a t-coil hearing aid for exceptional clarity
- Speakerphone mode, together with included clip, allows for hands-free calls
- Easily mountable magnetic visor clip for hands-free conversations in cars
- Rechargeable Li-Ion Battery
- Talk time: up to 10 hours
- Standby time: up to 14 days
- Dimensions: 5.5" L x 2" W x 1.3" H
- Bluetooth v2.1 +EDR profiles: HFP, HSP, A2DP
Additional Details
| Feature | Details | |
|---|---|---|
| Brand | Serene Innovations | |
| Mfg part # | SA 40 | |
| UPC | 39517598779 | |
| Warranty | One year limited warranty | |
| Color | Black | |
| Weight (lbs) | 0.81 | |
| Battery operated? | Yes (batteries required) | |
| Batteries included? | Yes | |
| Battery details | (1) 3.7V Lithium Ion | |
| Country of Manufacture | China |
MANUAL
- User Manual - Download
Attention CA Residents: Prop 65 Warning
WARNING:
This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.
Product Warranty
This item has one year limited warranty.
Return Policy
Return is subject to a restocking fee of $8 per item. Return could only be applied within 30 days after delivery.
Need more information?
Our staff are available to answer any questions you may have about this item
Our staff are available to answer any questions you may have about this item
Customer Reviews
By George Woodhouse
Date: October 10, 2025
This amplifier works very well, however I took quite a while to complete the order for a new battery. However with a patient lady the battery is on the way here. Thank you
Rating: 
[5 of 5 Stars!]
[5 of 5 Stars!]
By A Customer
Date: November 25, 2024
can hear
Rating: 
[4 of 5 Stars!]
[4 of 5 Stars!]
By Tracey
Date: December 19, 2022
Excellent !
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By billylane
Date: October 19, 2022
Hello. My wife uses this Serene speaker with her cell phone via bluetooth connection. It helps her her phone conversations, she has hearing loss, it works better than the speakerphone on her phone. There are many levels and types of hearing loss i have found out. So this will be different for some people.It helps my wife not miss as many spoken words if she didn't use it for phone calls.Thank you.
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By nan
Date: July 14, 2022
I have very poor hearing. i can no longer hear my regular house phone. i have hearing aides.but when i am home i do not wear them. That is when the phone rings. OH SUGAR. I connected this to the home phone via blue tooth . Guess what . I have to turn this down. IT IS TOOO LOUD. I have 3 of these now and they all need to be turned down. It's wonderful
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By Kat
Date: April 05, 2022
I got this devise for my elderly dad. He loves it! He told me that it was a life saver for him!!He has had trouble hearing on his mobile phone for a couple of years. No more!!
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]