1. Scope of application
 The portable wireless speaker is a product that integrates microphone, amplifier and speaker. It is suitable for teaching,
 Mobile on-site training for enterprises, mobile on-site sound reinforcement during visits, and can also be widely used in on-site promotions and fitness activities in shopping malls, supermarkets, and mobile shops.
 This product is compact, beautiful, easy to carry, and simple to operate, making it a good helper for many activities.
 2. Technical parameters
 Frequency range: 200MHz-270MHz
 Frequency response: 100Hz-15KHz
 RF stability: ±0.005%
 Distortion <1%
 Audio output power: 40W
 Signal to noise ratio:>60db
 Output impedance: 60 Euro
 Input signal: Wired microphone x1, wireless microphone x1, audio input x1, USB input x1, SD card input x1
 Main power supply: DC 12V/2.2AH or external AC 220V/50Hz
 Charging time: 8-10 hours
 Storage battery: 1.2AH
 Transmitter voltage: 9V
 Effective distance: about 50 meters
 Dimensions: 270MMX220MMX140MM