• Enjoy the Real Sound of Life: Hear nature-free listening
• USB Charging: USB cyclic charging, no need to replace the battery, simple and fast
• Adaptive Noise Reduction: Adaptive noise reduction, multi-channel detection, different from environmental sound and human voice, retaining more real sound
• Long Battery Life: It only takes two hours to fully charge, and it can be used for 35 hours with one charge
• Wear on Both Ears: Red and blue, regardless of left or right
• Lightweight and Comfortable to Wear: Fingertip size, invisible to wear. I can hear myself but others can't see
• One Key Operation: One-button operation, simple and convenient
• Clear Voice: It brings a clear communication experience to every senior citizen

Specification:

• Max-OSPL90: ≤115dB
• HFA-SSPL90: 109dB
• Peak Gain: 32dB
• HFA Full-on Gain: 28dB
• Frequency Range: 300-4500Hz
• THD at: 500-1600Hz≤3%
• Ea.Input Noise Level: ≤25dB