The Mooer GTRS PTNR Mini Bluetooth amplifier is the ultimate companion to MOOER's GTRS Guitar. The PTNR "Partner" amplifier is a lightweight, compact amplifier offering easy connection of external devices via Bluetooth and instrument connection utilising the 1/4input jack. The 2000 mAh battery means you can take it on the go and jam for up to 7 hours before needing a charge.The amp itself is a 5-Watt amplifier pumping through a 2.2speaker with 4-ohm impedance and a vibrating diaphragm tuned for bass frequencies that sound great despite a compact form-factor. Charging your PTNR is convenient as it uses a USB-C charging port that follows the same specifications as the GTRS guitar.