Voice Amplifier Portable Personal Voice Speaker with Microphone Display U disk TF Card playback Surround Sound for Teachers Speech tour guide

Voltage range：USB (5-20V DC) High-concerned chemical：none Input/Output：Other Sound Mode：Standard Mode Category：Speakers Use：Home Input Power(W)：<25 W Voice Control：Yes Waterproof：No Support APP：No Battery Charge Time：4H Material：Metal Audio latency：0 Inbox adaptor：No Output Current：1 Intelligent Personal Assistant：NONE Display Screen：No Surround sound channel configuration：Others Built-in Microphone：No Audio Crossover：Full-Range Number of Loudspeaker Enclosure：1 Power Source：Battery Channels：1 Feature：None Battery：Yes Communication：AUX Speaker Type：Portable Cabinet Material：Metal Origin：Mainland China Certification：NONE

Voltage range: USB (5-20V DC) High-concerned chemical: none Input/Output: Other Sound Mode: Standard Mode Category: Speakers Use: Home Input Power(W): <25 W Voice Control: Yes Waterproof: No Support APP: No Battery Charge Time: 4H Material: Metal Inbox adaptor: No Output Current: 1 Intelligent Personal Assistant: NONE Display Screen: No Surround sound channel configuration: Others Built-in Microphone: No Audio Crossover: Full-Range Number of Loudspeaker Enclosure: 1 Power Source: Battery Channels: 1 Feature: None Battery: Yes Communication: AUX Speaker Type: Portable Cabinet Material: Metal Origin: Mainland China Certification: NONE