Connect your guitar or keyboard to your S1 Pro+ with the Bose S1 Pro+ 1/4" Wireless Instrument Transmitter, a plug-in transmitter with a male 1/4" connector that turns any instrument into a wireless instrument. Use the integrated ports on the rear of the S1 Pro+ to pair the transmitter and recharge their internal 4-hour battery. When using the instrument wirelessly, the associated 1/4" channel input can be used as a TRS send/return effects loop on the S1 Pro+. Get to Playing Faster Leave the cables in your case and simplify setup when you add this wireless RF transmitter for your guitar, keyboard, or any equipment that uses a 1/4" connection. Just plug it in and the accessory pairs effortlessly to the S1 Pro+ Wireless PA System. Your Wireless Show The 2.4 GHz frequency gives a reliable wireless connection up to 30 feet, letting you freely engage with the crowd. And the transmitter features onboard controls for on/off and mute. Can't Stop the Music The transmitter works for up to 4 hours. Between shows, store it in the S1 Pro+ itself. It charges on the go, so you're always ready for the next show. Specifications General Compatibility Bose S1 Pro+ Inputs / Outputs Audio I/O 1x 1/4" TS Aux/Hi-Z/Instrument Input Wireless Wireless Yes Battery Battery Chemistry Not Specified by Manufacturer Battery Capacity 1.96 Wh Maximum Battery Life 4 Hours Physical Color Black Material of Construction Aluminum, Polypropylene Dimensions 3.3 x 1.18 x 1.14" / 83.8 x 29.97 x 28.96 mm Weight 0.11 lb / 0.05 kg Packaging Info Package Weight 0.215 lb Box Dimensions (LxWxH) 5.55 x 2.65 x 1.95"