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One machine dual-use, fully enclosed sound chamber design, with active noise reduction, and it adapts to different head types of different age groups. Larger Nose Clip Space and Flexible - Designed to meet the different facial contour and prevent your nose being hurt. The Adjustable T-shaped Strap - Designed to decrease the pressure around your eyes and on your head, providing you more comfortable feeling.Therefore it is suitable for different people. The special sound field technology can supply you excellent 3D audio-effect and immerse experiences,audio-visual integration,easy to enjoy 3D stereo sound effect. Specification: VR glasses: Material: ABS, resin lens about 42mm/1.65 inch Lens: Aspherical optical lens, high light transmittance Video format: 3D Field of view: 100-120 degrees Focal length: Adjustable IPD: Adjustable Colour: Black Mobile phone holder: About 3.5-6 inch smart phone Myopia is suitable for: 0-600 Headset: Speaker sensitivity: 112dB/mW Speaker impedance: 320 Frequency response range: 20-20000Hz Plug diameter: 3.5mm Headphone plug type: In-line type Colour: Black Handle: Wireless protocol: Bluehooth 3.0 Support system: For Android / IOS / PC Battery: R03 No.7 1.5V battery 2 (not included) Working current: 0.5-0.8mA Standby current: 0.5-1mA packing list: 1*VR glasses Thank you for your patronage and look forward to your next visit. If you are satisfied with the product, please let us know. We value the evaluation of each buyer. If you are not satisfied with our products or services, you can us at any time.