Features: This set includes a transmitter with antenna, a receiver with antenna, a headset microphone, an USB cable and a user manual. Adopting UHF (ultra-high frequency) band, the wireless microphone set has the advantage of strong anti-interference. Extremely high pick up sensitivity and good tone quality make your speech or singing more clear. The transmitter is powered by 2 AA batteries (not included), the receiver is powered by 1200mAh rechargeable lithium battery. Long distance connection between transmitter and receiver, the set is suitable for business meeting, speeches, teaching, live performance, etc. Note: Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding.