Color: Black - Plastic material - Synchronous: IR & Bluetooth V3.0 (Bluetooth only work with Samsung 3D TVs) - Bluetooth transmission range up to 10 meters - Display compatibility: 3D HDTV Blu-ray players - Frequency: 120Hz - Response time: 2.0ms - Contrast: 750:1 - Transmittance: >= 37% - Built-in 3.7V 60mAh battery - Charging time: 2 hours - Working time: 40 hours - Specification of Glasses - Lens width: 5.3cm - Bridge width: 1.5cm - Frame height: 4.5cm - Overall height of frame: 14cm - Accessories include: - 1 x USB cable (140cm) - 1 x Carrying pouch - 1 x Cleaning cloth - 1 x Chinese/English manual