The Relay® G10TII wireless transmitter is the perfect accessory to go with your Relay-ready Line 6 Spider® V/V MkII or Yamaha® THR®-II Wireless amplifier—making it easier than ever to take your performance wireless.* The G10TII will automatically charge and pair itself with your amp. You get up to seven hours of playing per charge, with up to 170 hours of standby time. Simply plug the transmitter into your guitar and start playing. The Relay G10TII is also compatible with the Relay G10 and G10S receivers, comprising a complete guitar wireless system.