ZJKHealth Launches XB-302 Binaural Rechargeable Hearing Amplifier With Portable Charging Case & 4-Level Volume Control
Jun 17, 2026
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ZJKHealth Launches XB-302 Binaural Rechargeable Hearing Amplifier with Portable Charging Case & 4-Level Volume Control
Hangzhou Zhongjiakang Electronic Technology Co., Ltd., widely known as ZJKHealth, a professional Chinese medical hearing device manufacturer with full R&D, production and OEM/ODM capacity, officially releases its brand-new XB-302 binaural rechargeable hearing amplifier to global healthcare and elderly care markets. Breaking the limitations of traditional disposable battery hearing aids, the XB-302 adopts an innovative TWS-style magnetic charging case design, paired with adjustable 4-level volume function, real-time power indicator and optimized acoustic parameters, delivering a more convenient, comfortable and cost-effective hearing assistance solution for seniors with mild to moderate hearing loss. As an upgraded flagship model in ZJKHealth's hearing aid lineup, this product fills the market gap of compact rechargeable binaural hearing amplifiers that balance professional acoustic performance and user-friendly operation, targeting families, pharmacies, medical distributors and cross-border e-commerce merchants all over the world.
Age-related hearing impairment has long troubled millions of elderly groups globally. Conventional hearing amplifiers on the market still have many obvious drawbacks: most rely on disposable button batteries, forcing frequent replacement and bringing extra long-term expenses; single fixed volume or only 2-speed adjustment cannot adapt to complex daily sound environments; bulky body without storage case is easy to lose when going out; lack of power reminder function makes users unable to judge remaining power, leading to sudden shutdown during important conversations. To solve all these pain points, ZJKHealth's R&D team spent more than one year conducting user surveys among thousands of senior users, repeatedly adjusting circuit structure, acoustic components and shell mold, finally developing the XB-302 hearing amplifier with differentiated competitive advantages, especially its portable magnetic charging case and exclusive 4-speed volume regulation system that stand out from homogeneous competitors.
The core innovative highlight of XB-302 lies in its integrated binaural charging storage case, which completely references the mature true wireless earbud charging logic and is equipped with built-in magnetic adsorption function. Users only need to gently place the left and right hearing amplifiers into the corresponding L/R slots inside the charging box, and the device will automatically shut down and start charging at the same time. The magnetic design ensures stable fitting during charging and carrying, avoiding accidental slipping and damage of small hearing units. The charging case is embedded with clear LED power indicator lights, which can intuitively display the remaining battery level of both the charging compartment and the ear amplifiers, allowing the elderly to clearly grasp power status at a glance without complicated judgment. No more sudden power failure during family chats, outdoor walks or hospital visits, greatly improving the stability of daily use experience. The whole charging case is ultra-miniaturized, with overall dimensions of only 75mm34mm28mm, lightweight enough to be put into pockets, handbags or small wallets, realizing all-day portable storage and backup power supply anytime and anywhere.
Another unique selling point of XB-302 is its independent 4-level adjustable volume design controlled by a single touch power key, which is a major upgrade compared with most 2-speed hearing amplifiers in the industry. The operation logic is extremely simple and friendly to seniors with inflexible fingers: short press the power key once to power on the amplifier; after startup, each short press switches one volume gear, with four optional volume ranges covering quiet indoor scenes, medium-volume family communication, noisy street environments and loud public gathering occasions respectively. Long press the power button for 3 seconds to manually shut down the device when it is not needed. The multi-gear volume adjustment allows users to freely match appropriate sound intensity according to different surrounding noise levels, effectively avoiding insufficient amplification in quiet environments or harsh, ear-straining loud output in crowded places, perfectly adapting to the diversified daily life scenarios of the elderly.
In terms of professional acoustic technical indicators, the XB-302 reaches strict medical auxiliary hearing standards, with stable and reliable core parameters verified by repeated laboratory aging tests:
1.Max Sound Output: 110±5dB, effectively amplifying human voice without instantaneous high-decibel sound stimulation to protect fragile eardrums of aging ears
2.Sound Gain: ≥45dB, sufficient amplification to capture low-volume dialogue and subtle environmental sounds
3.Total Harmonic Wave Distortion: ≤10%, greatly reducing noisy, distorted and harsh sound output, restoring clear and natural human voice transmission
4.Frequency Response Range: 450Hz-3000Hz, fully covering the core frequency band of human speech, ensuring complete capture of voice information during communication
5.Equivalent Input Noise: ≤32dB, built-in noise reduction circuit to filter redundant background buzz, traffic noise and household clutter interference
6. Working Current: ≤8mA, ultra-low power consumption design to extend single-use duration of the hearing amplifier
Behind the excellent product performance of XB-302 is the solid comprehensive manufacturing strength of ZJKHealth, a trusted factory specializing in hearing aids and home medical devices for many years, as fully displayed on the official enterprise introduction page https://www.zjkhealth.com/about-us. Unlike numerous small trading companies without independent production capacity in the industry, ZJKHealth owns a standardized dust-free production workshop covering over 5,000 square meters, complete full industrial chain layout including independent mold development workshop, injection molding production line, electronic circuit welding workshop, acoustic testing laboratory and finished product packaging workshop, with a monthly mass production capacity up to 500,000 sets of hearing amplifiers to support stable bulk order delivery for global clients.
The enterprise has obtained ISO 13485 medical device quality management system certification and EU CE product safety certification, and established a full-process multi-layer quality inspection mechanism. Every batch of XB-302 hearing amplifiers will go through incoming material inspection, semi-finished acoustic parameter spot check, finished product 100% function full test, high and low temperature alternating aging test and packaging integrity inspection before leaving the factory, strictly controlling the defective rate below 0.3% to guarantee consistent stable quality for overseas buyers. The in-house R&D team composed of senior acoustic engineers and industrial designers continuously optimizes product structure and performance, and can flexibly launch customized OEM & ODM services for global partners, including private brand LOGO printing on hearing amplifiers and charging cases, personalized packaging box design, user manual multi-language translation, and even customized parameter adjustment according to regional market regulatory standards.
ZJKHealth's mature global supply chain management system ensures efficient order turnover: standard bulk orders of XB-302 can be delivered within 15 to 25 working days after deposit confirmation, and small trial sample orders can be arranged with priority production to help new merchants test local market sales response. The professional multilingual overseas sales team provides one-stop full-cycle service for all customers, covering pre-sales parameter consultation, sample technical demonstration, order production progress tracking, logistics scheme recommendation and after-sales product fault guidance, solving all cooperation worries for distributors, offline pharmacy chain buyers, Amazon, Shopify and other cross-border e-commerce sellers from Europe, Southeast Asia, Middle East, Africa and South America.
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