1000:1 contrast (typ), 2ms response time (typ)50ft effective use distance, Emitter free efficient designActive shutter glass design for blur free immersive 3D experienceLong battery life provides for up to 70 hours of continuous usageFeatures ruggedized water and dust proof design for easy cleaningProduct DescriptionThe PGD-150 Active Stereographic 3D shutter glasses open new worlds of immersive learning possibilities. Molded in durable plastic, these glasses also feature water and dust proof design. Long lasting lithium batteries provide for up to 70 hours of usage before replacement. The three different sizes of custom interchangeable nose pieces guarantee a comfortable fit for each user.Product informationProduct Dimensions7.2 x 6.7 x 1.8 inchesItem Weight3.2 ouncesASINB003ES5BJUItem model numberPGD-150Customer Reviews2.4 out of 5 stars    33 ratings2.4 out of 5 starsBest Sellers Rank#745 in 3D Viewing GlassesIs Discontinued By ManufacturerNoDate First AvailableApril 1, 2010ManufacturerViewSonic

TI DLP Link 3D Ready, TN Type LCD ShutterRechargeable battery design via USB800:1 contrast (typical), 2ms response time (typical)40 feet effective use distance, Emitter free efficient designCompatible with any DLP Link projectorsProduct DescriptioniewSonic PGD-250 Active Stereographic 3D Shutter Glasses for ViewSonic DLP Link 120Hz/3D-Ready Projectors, BlackProduct informationProduct Dimensions6.4 x 6.6 x 1.7 inchesItem Weight1.44 ouncesASINB004LDG9IOItem model numberPGD-250Customer Reviews3.2 out of 5 stars    33 ratings3.2 out of 5 starsIs Discontinued By ManufacturerNoDate First AvailableFebruary 1, 2010ManufacturerViewSonic

TI DLP Link 3D Ready; TN Type LCD ShutterRechargeable battery design via USB;1200:1 contrast (typical)2ms response time (typical); 40 feet effective use distanceCompatible with any DLP Link projectors; Emitter free efficient designSupported frequency: 96~144Hz; Supports 30 hours of continuous use when fully chargedProduct description<P><SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/22px 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(33,33,33); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(248,248,248); orphans: auto; widows: 1; -webkit-text-stroke-width: 0px">3D Eyeglass for DLP Projectors, Black(Not Compatible with PRO8200/PRO8300/PRO8400/PRO8520HD/PRO10100)</SPAN></P>Product informationTechnical DetailsBrand‎ViewSonicManufacturer‎ViewSonicModel‎PGD-350Model Year‎2013Product Dimensions‎4.55 x 15.88 x 17.96 cm; 31.75 GramsItem model number‎PGD-350Batteries Included‎NoBatteries Required‎NoConnector Type‎USBContains Liquid Contents‎NoManufacturer‎ViewSonicItem Weight‎31.8 gAdditional InformationASINB00H29BVEQCustomer Reviews3.8 out of 5 stars    10 ratings3.8 out of 5 starsDate First Available14 January 2016Item Dimensions LxWxH45 x 159 x 180 Millimeters