1)Version:JR3.0 2) Frequency:280HZ-16KHZ 3) SNR ≥95dB 4) Distortion≤0.5% 5) Output power:4Ω3W 6) Working Distance: 10Meters 7)Charging woltage: DC 5V 8) Built in Rechargeable 1200mah Lithium battery 9)Speaker Diameter: 40MM 10) charging time: 4-6hrs max 11)Playing time: 10hrs 12)Function: bluetooth,FM,free calls,AUX,TF cards,U flash drive,Touch the colorful light