Beecaro S39 Bluetooth SpeakerBeecaro S39 Bluetooth Speaker  Features: Color: Black, Colorful Model: Beecaro S39 Bluetooth: V4.2 Bluetooth distance: 10m Battery capacity: 1500mAh Signal to noise ratio: ≥80dB Audio input: AUX, USB, TF card, Bluetooth Power: USB Charge Output power: 3W, 4Ω Input Power Supply: DC 5V Input voltage: 110V~220V / 50HZ Size: Approx. 18x8x8cm/ 7.09×3.14×3.14inch Tweeter size: 2.1inch