Features: Equipped with 4-core DSP digital sound field processing technology, perform stage level hifi sound effect. It can be used as Bluetooth-compatible speaker when not singing. Built in Bluetooth-compatible 4.2, stronger signal and wider receiving range. Large capacity lithium batteryfor longer endurance. 3 fashion colors option: Black/Golden/Red Package Includes: 1xBluetooth-compatible Speaker Microphone Specifications: Pickup: Dynamic Microphone Connection Mode: Bluetooth/TF/AUX Output Power: 4 5Wx2 Sound Performance: 115dB 1khd thd < 1% Receiving Distance: 10M Charging Voltage: DC5V 1A Working Temperature: - 10 - 45 Battery Capacity: 2600mAH Charging Time: About 5h Use Time: 5-6h Size: 5x24.5cm/1.97x9.65inches note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.