NewRixing NRG501B Outdoor Karaoke Wireless Speaker High-Power Audio Amplifier With Mic Feature: 1. Bluetooth5.0 technology: Equipped with the advanced technology 2. High power 5W with bass diaphragms. 3. Call function, noise canceling microphone allows you to answer calls without reaching the phone. 4. FM radio allows you to listen to radio freely. (In radio mode, press the play pause button for 3 seconds, it will automatically search and store radio stations.) 5. Support TF card or misro SD card up to 32G, support USB 2.0 disk. 6. Support USB flash drive plug and play. 7. Support external MP3 MP4 computer and other audio input (AUX) functions 8. Bluetooth-compatible 5.0, fast connection and stable signal, compatible with all bluetooth devices. 9. 1200mAh battery provides up to 8 hours of playback at 23 volume when fully charged. Specification: 1. Bluetooth-compatible version: 5.0 2. Bluetooth-compatible distance: <33 feet 3. Output power: 4Ω 5W x 1 4. Frequency response: 100Hz-18KHz 5. FM broadcast band: 87MHz-108MHz 6. Input Voltage: DC5V (1A) 7. Noise-signal radio: 80dB more 8. Battery capacity: 1200mAh 9. Charging time: 2-3 hours 10. Listening Talking Time: 6-8 hours 11. Product size: 17x15.5x25 cm(with MIC) 12. Packing SIze: 29.3x17x16 cm(with MIC) 13. G.W: 1408g Porduct Including: - Bluetooth speaker x1 - USB cable x1 - User manual x1 - Mic x1