This is a listing for a set of two Audio Technica ATW-T62a 800MHz band UHF wireless microphones. Operation has been confirmed with the wireless amplifier systems ATW-SP707a and ATW-SP808a. There are no issues. The exterior has some minor scuffs and dirt from use. Accessories: Batteries shown in the image. ★Batteries are rechargeable, but as they are consumables, they are not covered by warranty. This is a used item, so please no returns except for initial operational defects. Specifications: Model: Unidirectional dynamic type Oscillation method: Crystal-controlled PLL synthesizer system Transmission frequency: 806.125-809.750MHz (30 channels) Radio wave format: F3E Tone signal: 32.768kHz Antenna power (transmission output): 10mW (50Ω) / RF Hi, 5mW (50Ω) / RF Lo Transmission frequency stability: Within 20ppm Spurious radiation: Within 2.5μW (50Ω) Standard frequency deviation: ±5kHz Maximum frequency deviation: ±40kHz Frequency response: 100-15,000Hz Maximum allowable input: 130dB・SPL Power source: DC2.4-3V (using dedicated nickel-metal hydride battery or 2 AA alkaline batteries) Continuous use time*: Approximately 9 hours with dedicated nickel-metal hydride battery (RF-Hi) Approximately 10 hours with AA alkaline batteries (RF-Hi) Operating temperature range: 5-45℃ External dimensions: φ59×256mm (head diameter × total length) Weight: Approximately 304g (including dedicated nickel-metal hydride rechargeable battery)