Audio Components Feature: 1. Dual Wireless Microphone: The dual wireless microphone karaoke device includes two wireless microphones. The karaoke machine acts as a microphone charging station and can be easily charged at the same time. The speaker and microphone are automatically connected when turned on. Microphone with interesting voice changing function. 2. Long Battery Life: The karaoke speaker system has a built-in 3000MAH high-efficiency rechargeable battery, and each microphone has a built-in 1200MAH rechargeable battery, which can play 4-5 hours when fully charged. Easily charge the machine with the included micro USB cable. 3. Wide Compatibility: speaker supports music via Bluetooth-compatible connection, USB port, AUX port or TF card. More connection selection modes. Fun Voice Changer: Seven fun voice effects: original, baby, female, male, multiple mixes, to meet more needs and bring more fun to use. Voice changing microphone is suitable for car karaoke, family, party, classroom, speech and other occasions. Description: Name: Bluetooth-compatible Speaker Charging time: 2-3 hours; Battery life: 4-5 hours; Speaker battery capacity: 2000MA-4000MA; Microphone battery capacity: 1200MA; Speaker power: 7; Signal-to-noise ratio: 85dB; Frequency range 40Hz-20KHz; interface: Bluetooth-compatible, AUX, TF card, USB; Pointing feature: bidirectional; Input voltage: 5V; Product plus packaging weight: 1.3kg; Color box size: L15.5 x W15.5 x H17cm; Packing list: 1 x Bluetooth-compatible Speaker 2 x microphone 1 x USB charging cable 1 x cable 1 x instructions 1 x packing box Note: 1. Due to manual measurement, please allow 1-3cm error. Make sure you dont mind before bidding. 2. Due to the difference of different monitors, the picture may not reflect the actual color of the product. Thanks.