<p>Product Specifications:<br /> Item type:Ear Hearing Aid Device<br /> Frequency Range: 20Hz to 20KHz<br /> Microphone Sensitivity: -54dB&plusmn;2dB<br /> Built-in 350mAh rechargeable Li-ion battery<br /> Operating Time: 10&plusmn;0.3 hours<br /> Standby time: Over 60 days<br /> Input: DC 5.0&plusmn;0.5V, Max 500mA<br /> Color: Black<br /> Main Item Size: 14.6 * 13.2 * 2.7cm / 5.74 * 5.19 * 1.06in<br /> Main Item Weight: 59g / 2.07oz<br /> Content:<br /> 1 * Bone Conduction Hearing Aid Headphone<br /> 1 * 3.5mm Audio Cable<br /> 1 * USB Charging Cable<br /> 1 * English / Chinese User Manual<br /> Note:Due to some errors in manual measurement, the actual object should be received as the criterion</p><br><div class="panel panel-info"><div class="panel-heading" style="font-weight:bold;">IMPORT: THIS ITEM IS SHIPPED FROM CHINA. PLEASE EXPECT UP TO 25 DAYS FOR DELIVERY</div></div>

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