Audio-Technica wireless microphone system, a set of two microphones and a receiver. - Model: Audio-Technica ATW-75a - Number of microphones: 2 - Receiver: Wireless receiver - Power supply: Uses 4 AA batteries (rechargeable batteries unopened) 4 test alkaline batteries Daiso charger The wind screen sponges inside the microphones have been replaced with new ones. Cleaned - Frequency: Frequency display 13, 33 Thank you for viewing. This item is not subject to price reduction, and I will not negotiate discounts.