The AL-MYNA-NEST is the charging station designed to be used with the Atlas Learn AL-MYNA wireless infrared microphone. The AL-MYNA-NEST is designed to be desk or shelf mounted for easy access. The unit can charge up to two AL-MYNA wireless microphones at the same time. Charging status is indicated by the LED located next to each charging position. Red indicates that the unit is charging and green indicates the unit is fully charged and ready to be used. Additionally the unit can charge two additional sets of rechargeable batteries in the front battery storage compartment so that you always have charged batteries on hand. AL-MYNA-NEST includes the charging station and power supply. AL-MYNA microphones are sold separately. Use only Atlas Sound rechargeable batteries with NEST and transmitter.