SPECIFICATIONS

Design & Form Factor

• Behind‑the‑Ear (BTE) Style — This design wraps discreetly around the back of the ear, with a small tube or speaker that nests near the ear canal; comfortable and easy to wear for extended periods.

• Miniature In‑Ear Appearance (Invisible Option) — Some variants blend a nearly invisible, in‑ear style design for minimal visibility.

• Lightweight and Senior‑Friendly — Ergonomically engineered to be lightweight and non‑intrusive, they’re often recommended for seniors seeking comfortable, easy wear.

Sound & Amplification

• Digital Sound Processing with Noise Reduction — Equipped with modern chips that offer dual‑layer noise filtering to enhance speech clarity.

• Volume & Frequency Adjustment — Offers multiple volume levels (e.g., four tiers) and several frequency modes to adapt to varied environments—from quiet conversations to noisy gatherings.

• Performance Specifications (Invisible In‑Ear Model):

  • Max output SPL: ~114 dB ±2 dB

  • Average output SPL: ~106 dB ±2 dB

  • Sound gain: ~30 dB ±2 dB

  • Equivalent input noise: ≤ 22 dB ±2 dB

  • Battery: built‑in 25 mAh lithium, offering about 20 hours of use per charge.

Battery & Charging

• Rechargeable Convenience — Built with rechargeability to eliminate the hassle of swapping out disposable batteries.

• Smart Charging Case:

  • Supports magnetic/auto charging—the device powers on when removed, turns off and charges automatically when placed back.

  • Efficient charge cycle: Full charge typically takes 2–4 hours; provides 20–48 hours of listening (depending on model), with the case holding enough power for about 3 or more full charges.

Usability Features

• Simple Controls — Intuitive volume knobs or single-button systems; designed to be easy for seniors with minimal setup required.

• Multiple Ear Tips Included — Typically comes with various earplug sizes for a proper, comfortable fit.

• Auto Power Behavior — Device automatically turns on when removed from the charging case and powers off when returned, streamlining everyday usability.

Overview Table

The K&FCOPTEE Volume‑Adjustable BTE (and invisible in‑ear) hearing amplifiers are thoughtfully designed for seniors with mild to moderate hearing loss. They combine digital clarity, user-friendly volume control, comfortable wear, and hassle-free rechargeability. While they aren’t a medical-grade aid, they offer a practical, affordable solution for improved daily hearing.