BSP D6 Problems. On/Off, Bluetooth connection

is there some secret to turn this thing on or off? i recharged it for almost a day and as soon as i remove the charger cable, the device doesnt do anything when i try to switch modes for instance. no vibration when i try to change that. no leds blinking. setting the vibration force via T+Up/Down works, as soon as i insert the charging cable. but wether its charging or not, its like bluetooth doesnt work at all. no other device is able to find it. it works fine via usb connection on my pc.