1. Using UHF digital chip, the transmission delay is less than 1 mS, the anti-interference ability of automatic I-D frequency locking is strong, the transmission signal is more reliable, more stable, and the timbre is clear. 2. The function of automatic frequency sweep matching is more convenient and simple to use. 3. Standard 3.5 to 6.35 audio converter, widely used in all types of speakers and audio equipment. 4. The chip has low power prompt and low power shutdown function. 5. Using digital circuit processing technology, the signal-to-noise ratio is higher. U-band frequency penetration is stronger, more stable and pure tone. Wireless Microphone: Band: 630-696 MHz power: 10dBM Mic type: capacitive microphone Battery type: 3.7V lithium battery 450mAh Receiver: Band: 630-696 MHz Frequency response range: 50Hz-15KHz Battery type: 3.7V lithium battery 450mAh Power Charging Requirements: USB5V 500mA Distance: up to about 30 meters Color: As Shown Material: plastic Package Contents: 1 x UHF Headset Wireless Microphone 1 x Receiver 1 x Charging Cable 1 x 3.5 to 6.35 Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.