SD card from the MP3 music formats
Sustainable playing time: : ≈ 8 hours
The power supply voltage: 3.7 V sustainable rechargeable batteries(charging about 2 hours, please don't live long charging)
Speaker Dimension: φ40mm
Speaker impedance:32Ω ±15%
Frequency Response:20Hz~20,000Hz
Sensitiviy :108dB S.P.L at 1KHz
Rated power:20mW；Max.outputpower:40mW；Distortion:<0.1%
Audio format and source support: high-quality
Product size: 150 x 115 x 35 mm (fold 130 * 75 * 35 mm)
Packing: color box.
Meas: 62*46*36CM/64PCS
GW/NW: 9.5/8.2 KGS
Speaker
Bluetooth Speaker
