USE d/0t 4th &5th generation WHEREVER YOU WANT: Get rid shackles of cablesequip your d/0t 4th &5th generation with Blanou D4 battery base. Lie in the bathtub make yourself comfortable, enjoy music 8 HOURS PLAY TIME: 5200Ah D4 battery base can be fully charged in 4.5 hours. 8 hours play time, 30 hours standby time. 4 LED lamp beads beside the bottom switch, each representing 25% power PLUG & PLAY: Push your points into battery base, press and hold the power button for about 2 seconds to start working.built-in smart charging chip, charge the battery while using audio without frequent disassembly HIGH QUALITY SOUND: Blanou D4 battery base designed with 3 holes, do not need worry about sound distortion. The bottom of battery base equipped with 2 non-slip shock-absorbing silicone gasket. No sound generated by vibration of desktop PACKING LIST & NOTE: Blanou battery base for Dt 4th *1, user manual *1. Note: We do not provide additional power adapters for D4.Please use adapter