The BW-265 Hearing Aid is a body worn hearing aid for two ears. It features independent volume controls for each ear.
Market Suggested Retail Price
Distributors / Implementing Organizations
Solar Ear manufactures all of their products in their factories in Brazil, Botswana, and China.
Intellectural Property Type
User Provision Model
Distributions to Date Status
Between 2002 and 2018 Solar Ear has sold over 50,000 Solar Ear hearing aids, 100,000 solar chargers, and 250,000 rechargeable hearing aid batteries.
Peak OSLP 90 (dB SPL)
132 dB SPL
High frequency average (HFA) OSLP 90 (dB SPL)
122 dB SPL
HFA full-on gain (dB)
Total harmonic distortion for 500Hz (%), 800Hz (%) and 1600Hz (%)
<3.8, <2.5, <1.0 Hz
Equivalent input noise (dB)
Number of frequency channels
2 frequency channels
Battery current (mA)
Memory switch (Y/N)
T-coil feature (Y/N)
The device consists of two headphones that are connected to an electronic box by a wire. The headphones are placed in both ears of the user and the electronic box is stored by the user in, for example, pockets or a bag. Product specifications include: Two channels - one for each ear Individual-ear adjustment Binaural headset New Class- AB Amplifier Audio input support Telecoil With trimmers MTO Switch Product dimensions are: 660 x 43.1 x 20.3 mm
The listening programs must be set by a hearing healthcare professional or the manufacturer. All Solar Ear hearing aids come with a 2-year warranty. Technical support is provided in the user manual.
Replacement batteries are available for purchase from the manufacturer.
The rechargeable battery can withstand at least 500 cycles. The lifetime of the hearing aid is approximately five years.
Manufacturer Specified Performance Parameters
Manufacturer specified performance targets include: clear and balanced sound delivery, low noise, low harmonic distort, attractive design.
Vetted Performance Status
Results from a clinical trial of a Solar Ear BTE hearing aid with 21 participants revealed that the hearing aid offers substantial benefit to the hearing impaired with a severe predominantly sensorineural hearing impairment (i.e >60 dB at 2 kHz) and gives amplification in the desired frequency range that is aligned with National Acoustic Laboratories (NAL) recommendations.
Patients with a middle-ear infection are cautioned not to use this product until cured, unless instructed otherwise by a doctor.
Complementary Technical Systems
USB charging ports are needed to recharge the device battery.
Academic Research and References
Parving, A., Christensen, B., 2004, Clinical trial of a low-cost, solar-powered hearing aid. Acta Otolaryngol. 124(4):416-20.
Humphreys, G., 2013, Technology Transfer Aids Hearing, Bulletin of the World Health Organization, 91(7), pp. 471–472.
Compliance with regulations
Solar Ear has been featured in several articles and by several TV shows, magazines, and newspapers.