We guarantee our EMics to work to spec for 3 x 45-60 minute classes a day. After each class allow the EMic to dry out (remove windscreen). If the Health Club is providing the EMics then every instructor should be using their own personal EMic windscreen. In busier studios we recommend having two EMics in different colours. Choose your EMic colour: Blue, Red, Yellow, the new Purple or standard Black. Each EMic should have it's own transmitter (body pack) set to the same channel and working with the one receiver. Between them, they can cover 6 classes a day by alternating their use.
If you're in need of a second set or even a replacement set then this is the combination you want.