Detachable sells time point device

The utility model relates to a sell time point (point of sale, POS) device, it includes an unable adjustment base and a portable electronic device, and unable adjustment base includes a supporting seat and a connecting support that mutual pivot was established, and the supporting seat sets firmly on desktops such as cash desk, the portable electronic device detachable is liftoff to be established on unable adjustment base, and a somatic part that includes that mutual pivot establishes and a joint portion, is equipped with a screen on this somatic part, and the joint portion is parallel with the normal line of screen with the axis of rotation of this somatic part, portable electronic device establishes on unable adjustment base at ordinary times, and can regard as general selling time point device to use, and at this moment unable adjustment base's supporting seat and connecting support can make the upset of screen front and back, and this somatic part and joint portion that portable electronic device's mutual