Features:1. Support Bluetooth music playback and call functions2. Support Bluetooth reverse link function and TWS function3. Support TF card support AUX audio input4. Support TF card capacity no more than 32G5. Support hands-free calling6. Support USB audio inputTWS function connection method:1. After turning on the two speakers at the same time press and hold the pause button of one of the speakers for 3-4 seconds the two speakers will be automatically connected2. Turn on the phone's Bluetooth search for audio Bluetooth devices and you can use it after connectingSpecifications:1. Bluetooth version: BT 5.02. Output power: 2 x 10W3. Signal to noise ratio: greater than or equal to 85 decibels4. Charging voltage: 5V5. Product material: ABS + aluminum alloy6. Battery capacity: 3600mAh7. Storage capacity: no more than 32GB (TF card not included)8. Product size: 42 x 8.3 x 4.5 cm9. Product weight: 642 gramsPacking list:Bluetooth speaker x 1Audio cable x 1Charging cable x 1English instr