LEERFEI E91 10W Long Bar Shape Card Bluetooth Audio Features: 1. Bluetooth 5.0 version 2. Double power loudspeaker, heavy bass sound effect 3. Built-in 300mAh battery, can be used repeatedly 4. Bluetooth distance is about 10m (without obstacles) 5. Support Bluetooth, U disk, TF card, 3.5mm AUX, FM to play music 6. Button operation, simple; with movie and music two modes can be switched 7. Aluminum alloy shell, durable Product specifications: 1. Speaker specifications: 45mm x 2 2. Output power: 10W 3. Frequency response range: 80Hz-180KH