Description: Using large-capacity battery, this voice amplifier supports long endurance. 360 degree and sensitive signal reception is supported by the infrared remote controller. This voice amplifier features intelligent noise reduction, supporting wide coverage range as well as HiFi, clear and loud sound quality. It is constructed of ABS material. The length of this product is 12.5cm, the width is 8.2cm and the height is 5cm. This voice amplifier is suitable for teaching, live streaming, interviewing, outdoor promotion. training, listening to music and so on. Item Name: Voice Amplifier Material: ABS Type: Wireless Applicable Population: General Port Type: USB Voltage: DC 10V Connection: 3.5mm Audio Plug Frequency Response Range: 100Hz-13000Hz Output Power: 25W Input Signal: Wired Microphone Input Impedance: 5ohms Signal-to-noise Ratio: ≥75dB Sound Channel: 1 Operation Mode: Press Key Extended Storage: 32GB Bluetooth-compatible Protocol: 4.0 Effective Distance: 10m Power Supply: Built-in Battery Battery Capacity: 2200mAh(Included) Running Time: 8H Charging Time: 3-4H Features: Sensitive, Mini, Long Battery Life Size Details: L: 12.5cm/4.92", W: 8.2cm/3.23", H: 5cm/1.97"(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Voice Amplifier 1 x Power Adapter 1 x Remote Control 1 x Strap 1 x Camouflage Bag 1 x English User Manual Using large-capacity battery, this voice amplifier supports long endurance. 360 degree and sensitive signal reception is supported by the infrared remote controller. This voice amplifier features intelligent noise reduction, supporting wide coverage range as well as HiFi, clear and loud sound quality. It is constructed of ABS material. The length of this product is 12.5cm, the width is 8.2cm and the height is 5cm. This voice amplifier is suitable for teaching, live streaming, interviewing, outdoor promotion. training, listening to music and so on.