3inch Mini Speaker

Wireless transmission range: up to 10m Speaker drive size : 3 inch FM scan range : 87.5-108.0mHz USB Charging: DC 5V Playtime: 2 to 3 hours Charging time: 2 hours Volume: Up/Down Buttons Support:BT, FM, USB, TF Card Sound: Big Sound & Good Bass Wireless Bluetooth Speaker Big Sound & Good Bass FM Radio Function USB & Micro SD Card Supported Play/Pause & Previous/Forward Buttons