Bluetooth 4.1
Bluetooth transmission power:   CLASS2  4dBm
Bluetooth working frequency：2.4GHz
Wireless range 10 meters
Speaker 3W*1
Built-in 500mah rechareable battery
USB port in the base for charging speaker orb or smart phone
Frequency range 150HZ-18KHz
SNR S/R>=85db
Distortion THD: ≤ 0.1% (3.7V/1KHz/1.8W)
Speaker orb charging input 5V,1A
Product size：19*19*13cm
Net weight：1.3kg
Gross weight：1.5kg
Color Box: 23.5*23.5*23cm