Small, lightweight, portable Bluetooth speaker with RGB LED backlight. Designed to play music from all devices with Bluetooth function and MP3 files recorded on the TF (microSD) card. It has an FM radio. Perfect for listening to music in the car, traveling and at home. Bluetooth profiles: A2DP, AVRCP, HFP, HSP Bluetooth version: 5.0 Bluetooth transmitter power: 3dBm Bluetooth transmitter frequency: 2.402-2.480 GHz Built-in TFT (microSD) card slot for MP3/MP4 playback AUX mini-jack input Maximum range: up to 10m Built-in Lithium Polymer Battery: 400mAh Frequency response: 280Hz-16kHz Output power: 3W Charging voltage: 5V Charging time: 1.5-2 hours Music playing time: 3-4h USB C charging cable (30cm long) included