Portable Wireless Voice Amplifier for Teaching, Tour Guide, Sales. Features: 1.Professional Voice Amplifier: It Can Create Richer, Fuller, Louder Sound with Clarity. 2.High Volume: It Adopt Double Voice Coil Field Sounderto Have a High Volume. 3.Stylish Appearance: Beautiful Color and Fashionable Appearance. 4.High Sensitivity Radio, Automatic Channel Search and Savings. 5.Repetitive Function:It Can Be Repeated over and over Again by Pressing the Repeat Key. 6.18650 Mah Big Capacity Battery:Built-in Rechargeable Lithium Battery, Low Consumption and Power Saving, Provides Long Using Life. Specifications: Battery Life (Hour): >10 Hours Item Type: Wearable Megaphone Support MP4: Yes Range: 100Hz-13000Hz Voice Record: Yes Dimensions (WxHxD)): 3.94 * 3.35 * 1.38 Inch Support MP3: Yes ModeNumber: Portable Microphone Power Output: 5W Features 1: Amplifier Wireless Loudspeaker Features 2: Voice Amplifier Megaphone Features 3: Booster Megaphone Speaker Features 4: Portable Voice Amplifier Features 5: High-power Voice Amplifier Features 6: Voice Amplifier Speaker Features 7: Voice Amplifier Microphone Features 8: Megaphone Speaker for Teaching Features 9: Voice Amplifier for Tour Guide Features 10: Loudspeaker . We are an international based seller that will ship your order from abroad, please at least a minimum 21 working days for delivery right now due to the ongoing delays in shipments globally.