Review on Microphone Bluetooth Microphones Christmas Stocking Kids' Electronics by Stephen Good

Rechargeable Battery Upgrade - Built-in rechargeable high-efficiency lithium-ion battery, 5-10 hours of continuous use when fully charged. Fast charging, long lifespan. To upgrade, we have done more: reverb adjustment, aqurate sound quality, more natural and beautiful voice; Two layers of noise reduction, thick K-Gold mesh and high-density anti-splash sponge. Your satisfaction is our pursuit and we offer 1-year warranty and 24-hour friendly customer service.