Maximum Saturation Sound Pressure: 129dB ± 4dB<br />Maximum File Acoustic Gain: 48dB ± 5dB<br />Harmonic Distortion: ≤18%(450≤F≤5000)<br />Frequency Response: 450-3000Hz<br />Equivalent Input Noise: ≤ 30dB<br />Battery Type: Li-ion Battery<br />Operating Voltage: 0.2±0.1V<br />Operating Current: ≤ 4mA<br />Color: Beige<br />Size: 1.8 x 1.4 x 1.6cm / 0.7 x 0.5 x 0.6in<br />Package Included:<br />1 x Hearing Aid<br />1 x Charger (110-240v)<br />4 x Earplugs<br />1 x Bag<br />1 x User Instructional Brochure