Highly versatile. The WMS 40 PRO instrumental sets. The convenient PT 40 PRO bodypack is the smallest and lightest transmitter in its class. It can be used with many AKG miniature microphones. The supplied MKG L cable allows an electric guitar or bass to be connected directly to the transmitter. The Instrumental Set FLEXX system boasts selectable frequencies and optimum transmission reliability. The Instrumental Set Dual system is your best choice for two-channel applications. The Guitar/Vocal Set system includes a GB 40 guitarbug transmitter. To sing and play with wireless mobility, all you need to do is connect the GB 40 to your guitar or bass, put on the C 444 L head-worn microphone, and power up. 1) WMS 40 PRO INSTRUMENTAL SET FLEXX 1 SR 40 FLEXX 1 PT 40 FLEXX 1 MKG L 2) WMS 40 PRO INSTRUMENTAL SET DUAL 1 SR 40 DUAL 2 PT 40 PRO 2 MKG L 3) WMS 40 PRO INSTRUMENTAL SET SINGLE 1 SR 40 SINGLE 1 PT 40 PRO 1 MKG L