Shidu S613 Original Voice Amplifier Multi Colors
- Ultralight voice amplifier only 4.8ozs & Sound covers over 4300 square feet / 400-500㎡.
- Built-in 2000mAh Rechargeable Lithium Batteries: offers you up to 12 hours amplify time.
- Easy to use and HiFi voice amplifier, protect your throat, [ Excellent clarity]. Support TF Card & U flash disk