Item Type: 3D Glasses <br>Material: Plastics, Electronics <br>Model Working Mode: LCD Shutter <br>Frequency: 148Hz <br>Transmittance: 36% (TYP) <br>Contrast Ratio: 1000/1 <br>Standby Time: 180 Days <br>Charging Time: 2.5 Hours <br>Continuous Working Time: 35 Hours <br>Signal Reception Distance: Approx. 6m/19.7ft <br>Battery Type: Built In 45mAh Lithium Battery (Included)1、COMPATIBILITY: 3D glasses are compatible with 96?144HZ and support 3D projectors of major brands with DLP LINK technology (regardless of brand). <br>2、LONG BATTERY LIFE: DLP 3D glasses have a built in lithium rechargeable battery, which can last for about 30?40 hours after 2?3 hours of charging. <br>3、HIGH LIGHT TRANSMITTANCE: Rechargeable 3D glasses support one button left and right eye switching, high light transmittance, and excellent effects. <br>4、USB CHARGING: 3D active shutter glasses are USB rechargeable DLP LinK 3D glasses, which are very convenient to use. <br>5、CLEAR PICTURE: DLP Link 3D glasses enable clear picture rendering, effectively reduce ghosting, and present realistic 3D images.1 x&nbsp;3D Glasses<p><p>1 x Eyeglass Cleaning Cloth</p><p>1 x Charging Cable</p><p>1 x Carrying Bag</p><p>1 x Instruction Book</p></p>