A head mounted display device comprising: a housing; and a mounting device (100, 108, 200, 300, 318, 400) configured to mount a further device in the housing, the mounting device (100, 108, 200, 300, 318, 400) comprising: a first arm (102, 204), wherein the first arm (102, 204) is rotatable around an axis; a second arm (104, 206), wherein the second arm (104, 206) is rotatable around the axis; wherein the first arm (102, 204) comprises at least one first engagement member (212, 214) configured to engage with the further device; wherein the second arm (104, 206) comprises at least one second engagement member (208, 210) configured to engage with the further device; and wherein the mounting device (100, 108, 200, 300, 318, 400) further comprises a coiled spring provided in the axis and engaging the first arm (102, 204) and the second arm (104, 206); wherein the coiled spring is configured to force the at least one first engagement member (212, 214) and the at least one second engagement member (208, 210) towards each other; and wherein an angle between the first arm (102, 204) and the second arm (104, 206) on one side of the axis is smaller than an opposing angle between the first arm (102, 204) and the second arm (104, 206) on an opposite side of the axis when the at least one first engagement member (212, 214) and the at least one second engagement member (208, 210) engage with the further device. a housing; and a mounting device (100, 108, 200, 300, 318, 400) configured to mount a further device in the housing, the mounting device (100, 108, 200, 300, 318, 400) comprising: a first arm (102, 204), wherein the first arm (102, 204) is rotatable around an axis; a second arm (104, 206), wherein the second arm (104, 206) is rotatable around the axis; wherein the first arm (102, 204) comprises at least one first engagement member (212, 214) configured to engage with the further device; wherein the second arm (104, 206) comprises at least one second engagement member (208, 210) configured to engage with the further device; and wherein the mounting device (100, 108, 200, 300, 318, 400) further comprises a coiled spring provided in the axis and engaging the first arm (102, 204) and the second arm (104, 206); a first arm (102, 204), wherein the first arm (102, 204) is rotatable around an axis; a second arm (104, 206), wherein the second arm (104, 206) is rotatable around the axis; wherein the first arm (102, 204) comprises at least one first engagement member (212, 214) configured to engage with the further device; wherein the second arm (104, 206) comprises at least one second engagement member (208, 210) configured to engage with the further device; and wherein the mounting device (100, 108, 200, 300, 318, 400) further comprises a coiled spring provided in the axis and engaging the first arm (102, 204) and the second arm (104, 206); wherein the coiled spring is configured to force the at least one first engagement member (212, 214) and the at least one second engagement member (208, 210) towards each other; and wherein an angle between the first arm (102, 204) and the second arm (104, 206) on one side of the axis is smaller than an opposing angle between the first arm (102, 204) and the second arm (104, 206) on an opposite side of the axis when the at least one first engagement member (212, 214) and the at least one second engagement member (208, 210) engage with the further device.