specification Appearance size length: 200mm width: 110mm height: 216mm Weight: 460g Optical information lens: aspherical resin lens Lens diameter: 42mm Horizontal field of view (FOV): 90 ~ 120 ° Supports viewing with glasses. Dual adjustment system for pupil distance and object distance Headphone information speaker sensitivity: 112dB / mw Speaker impedance: 320 Frequency response range: 2020000Hz Plug diameter: 3.5mm Headphone plug type: straight plug type Compatibility information: This product is currently compatible with most Android and ios smartphones with 4.5-6.0 inches on the market Interactive mode: the combination of handle remote control and head control Adapt to myopia: below 400 degrees Features Compatible devices: smart phones All-in-one virtual reality glasses: yes Sensor type: lens virtual reality Notes: 1. 1 inch = 2.54 cm 2. Please measure it yourself to choose the right size. 3. Due to the difference between the different displays, the picture may not reflect the actual color of the item. Thank you!