Price For: Each Manufacturer: Adafruit Product Category: RF Development Tools RoHS: Product: Breakout Boards Type: GSM/GPRS, GPS Tool Is For Evaluation Of: SIM808 Frequency: 850 MHz/900 MHz/1.8 GHz/1.9 GHz Operating Supply Voltage: 2.8 V to 5 V Brand: Adafruit Description/Function: FONA 808 - mini cellular GSM - GPS breakout Dimensions: 44 mm x 43 mm x 8 mm;For Use With: MT3336 Interface Type: UART, USB Packaging: Bulk