Brand New – Factory Sealed Digital binaural hearing amplifier designed to improve sound clarity in daily conversations. Lightweight, energy-saving and comfortable ergonomic design, suitable for both ears. Binaural 16-Channel Digital Processing Intelligent Noise Cancellation Feedback Reduction Low Noise Distortion Ergonomic Design Long Battery Life Digital Circuitry Model: VHP-1710 Size: 33 × 17.7 × 11.8 mm Weight: 5.4 g Working Voltage: DC 3.7V Frequency Response: 200–5000 Hz Max Acoustic Output: ≤114 dB Full-on Acoustic Gain: 33 dB Total Harmonic Distortion: ≤5% Equivalent Input Noise: ≤23 dB