<b>Perfect Practice Tool</b><br> 1/4"(6.35mm) input, 1/8"(3.5mm) output designed make this guitar headphone amp easy for the artists to play with their favorite backing tracks, it is a perfect tool for daily practice and pre-show warming-up. <br><br> <b>WARM TIPS</b><br> The B6 guitar headphone amp isn’t a BT transmitter, it is only a receiver, so it can’t search BT device and can’t be used to connect with other BT devices( Such as Bluetooth headphones). <br>The BT function is for playing along to music or a backing track, streaming from a smart phone. So we only can use phone or Pad to search and connect B6’s BT to play background music. <br><br><b>Specifications:</b><br> Material: ABS Plastic + Electron<br> Standby Time: 8h<br> Charging Time: 5.5 - 6.5h(Standard Charge); 1.5 - 2.5h(Fast Charge)<br> Charging Method: USB Charging<br> Power Supply: Built-in rechargeable lithium battery<br> BT Function: BT receiver for background music<br> Requency Response: 50Hz-18kHz<br> Wireless-BT Range: 8-10m<br> Output: 1/8"(3.5mm) Output designed for headphones or speakers<br> Input: 1/4"(6.35mm)<br> Product Size: 4.8 x 0.7 x 1.7 Inch(unfold) 3 x 1.5 x 1.7 Inch(fold)<br><br> <b>Packing list:</b><br> 1 * Guitar Headphone Amplifier<br> 1 * USB Charging Cable<br> 1 * Audio Cable<br> 1 * User Manual<br> 1 * Protective Bag<br>