Features: - Dual speaker TWS wireless Bluetooth karaoke microphone JY57 - 4-in-1 design - use it as a microphone, speaker, player, or recorder - Colorful LED lights will surely bring more visual beauty to your event - Built-in 1500mAh rechargeable battery with five hours of working time - Four voice selections for more fun: baby voice, man voice, woman voice, or regular Specifications: - Bluetooth version: 5.0 - Bluetooth range: 10 m - Speaker power: 5W x 2 - Battery capacity: 1500mAh - Working time: up to 5 hours - Frequency range: 20Hz-18kHz - S/N: under 80dB - Dimensions: 64 x 214 x 40 mm