Feature: 1. Full Magnetic Speaker: Our children's wireless microphone uses a high power full magnetic speaker and a large cavity design to release excellent sound quality. 2. High Fidelity Shielding: The children's Bluetooth microphone is designed with high fidelity shielding to ensure fluent transmission, full sound quality and a large frequency band range. 3. No Delay: This Bluetooth compatible microphone has a stable signal and no delay, allowing you to get rid of the interference of cables. 4. ABS Plastic: This wireless microphone is made of ABS plastic material with excellent craftsmanship and is suitable for performances, concerts, broadcasts, etc. 5. Interesting Gift: Our wireless microphone is cute looking and makes a fun gift for kids, of course this microphone can be used by adults as well. Specification: Item Type: Microphone Material: ABS Plastic Battery: Lithium battery 5V 1800mAh (shipping with internal battery) Frequency Range: 100Hz-10KHz Reverb Mode: Reverberation with echoing sound effect Playback Time: 4H Charging Time: 3H Speaker Output: External magnetic speaker. Package List: 1 x Microphone1 x Manual1 x USB Cable