Optical technology:3M Mobile LCoS optical engine Lamp:3M lamp Light source:Red/Green/Blue LED, 20000 Hours Aspect ratio:4 :3 Luminous flux:10 lumen Resolution:640*480(VGA) Contrast ratio:1000:1 Projection picture size:6"~50"(inch)(15~127cm) Projector distance:25~180cm Zoom & focus:Manual focusing Projector source external:VGA, three in one AV jack Audio tweeter:Stereo Supportable power:Built-in rechargeable Li-ion batteries, USB A/C adaptor Operating environment:0~60 Size:W72 x L72x H28mm Service life of lamb (hour):>2,0000 Hours Power waste (w):5W Remarks: Not include the price of print LOGO and value-added tax ex , this is the factory prices, and all products over FCC,UL,CE&ROHS Delivery time: 15 days(base on 100pcs) within received deposit Payment term: 50% deposit once confirmed order and the balance to be paid before shipment Guarantee : 1 year upon date of purchase, we will guarantee to keep the goods in repair (not including fittings) And Guarantee server is subject to normally using.And all of damage by man-made (tear open the housing, tear off the sticker, unnormally using),or losing this card, we will not guarantee Accessories: USB A/C adaptor,bracket,AV/VGA connect cable,Manual instruction&quality certificate Packing: Leather bag as attached picture QTY/CTN:20 PCS, G.W./CTN:11.8 KGS Meas/CTN:0.017CBM