Specification Binding : Personal Computers Brand : waveshare Label : Waveshare Manufacturer : Waveshare Model : GSM/GPRS/GNSS HAT PackageDimensions_Weight : 0.3968320716 PackageDimensions : L:6.1417322772 X W:4.1732283422 X H:1.8897637776 PartNumber : GSM/GPRS/GNSS HAT ProductGroup : PC Accessory ProductTypeName : MOTHERBOARD Publisher : Waveshare SmallImage_Height : 56 SmallImage_URL : http://ecx.images-amazon.com/images/I/41VlNcgLf1L._SL75_.jpg SmallImage_Width : 75 Studio : Waveshare Title : Waveshare GSM/GPRS/GNSS/Bluetooth HAT Board Based on SIM868 Compatible with Raspberry Pi 2B/3B/Zero/Zero W Support Bluetooth 3.0 onboard USB to UART Converter Weight : 0.4 WeightUnit : pounds