This model is with Backlit, you can playing it on dark night for a good feeling.Color: Black+ BlueBacklit: Yes(Blue color lighting)Size156*126.5*18.5mmKeyboard weight165gWeight with package235gCarton Size50pcs/carton NW 11.8KG,  GW 12.8KGMaterialABS+ PC+ SiliconeCharging Voltage5VCharging portmicro USBBattery capacity800mA removable 5C lithium batteryAccurate of touchpadA GradeResponse rate of touch120 times/SOperation distance25mDPIAdjustableWorking current5mAStandby current10uAWake-upAny keys or tap touchpadLithium battery version alert3.3V(orange led lighting)AAA battery version alert2.0V(orange led lighting)Lithium battery versioncharging 5-6 hours, working 30-60 days by normal usecurrent with backlit opening11mAFN + F1: the signal between the keyboard and USB receiver/recovery the signal between the keyboard and receiverFN + Space: adjusting the mice sensitivity of touch-padFN + F7: full desktop screenshot functionFN + F8: lock the touchpadFN + F6: open/close the backlit of the keyboardFN + PgUp: jumping to the beginning of the letter/textFN+ PgDn: jumping to the end of the letter/textCtrl +Alt+ Del: open the task managerPackage and Delivery:One mini keyboard in a PP bag;One USB receiver, one user manual and PP bag  in one bubble pack;One bubble pack and one charging cable in a small white color box;One white color box in one colorful box;50pcs color packing box in one carton; 12.5KG/CTNShip via DHL/FEDEX/UPS/EMS/TNE, ect,small order ship out within 1-3 working days after deposit;mass order ship out within 3-7 working days after deposit;OEM order ship out within 7-15 working days after deposit(depend on)