2.4G Wireless Headset Microphone, Detachable Dual-Use Wireless Microphone, Built-In 3.7V; 120MAH Polymer Battery, Auto-Connect On Power On, 50M Wireless Range, 6H Battery Life, Near-Field Pairing (Anti-Interference), Original Sound & Reverb Dual-Mode Switch (Press "+" "-" Simultaneously), 45Min Auto Shut-Off When No Audio, Comes With 1/8" And 1/4" Plugs