Glasses Type: 3D Glasses Model Number:Bobo Z4 VR Glasses 3D Glasses Type:Polarized Lens:Aspheric Optical Lens Color:White+Transparent cover Material:ABS Compatible phone sizes: 4 inches to 6.5 inches Glass Glass material: Japanese professional optical lens Glass diameter: 42mm Vision angle: max 120°(related to the size of phone and the headstrap tightness) Optidress: Aspherical design Colour aberration: 0.39mm Vision control Short-sighted: 0-800° Far-sighted: 0-500° Pupil Distance Adjust: 58-68mm Audio system Earphone sensitivity: 98 dB Frequency range: 20 – 20,000Hz MAX power: 50mW Executive Standard: GB/T 14471-2013 Earmuff: High fidelity audio earmuff x 1 Support phones Compatible phone Screen size: 4-6.5 inches Bluetooth handle (optional） Support 3.0 standard wireless handle High sensitive rocking bar, Millisecond response Confirm，return，voice up and down button，blue tooth multifunctional button, power on and off / Android mouse function Key life-span 200,000 times Body material Body: high strength ABS+PC material Headstrap: TPU+ lycra, pass test of bandage tensile strength 5KG/5second Face contact: Advanced flocking，Anti allergy and breathable and anti sweat ；Detachable design，easy to clean and reuse Body port button 3.5 mm earphone port Capacitance type input button Brand No Brand SKU OT776EL12HI5WNAFAMZ-185926