Swan also integrates high performance lithium battery, charging through the universal USB interface connected to the computer, and provides a charging protection function. As far as possible in order to reduce power consumption, the hidden toggle switch at the bottom of the fuselage design of FENDA, after the closure of the power supply can be cut off completely. Low power consumption characteristics of Bluetooth 4 itself plus the swan, FENDA more than five hours of continuous work after charging, enough to meet the needs of.