Features: brand new and high quality SIM800C isquad-band GSM/GPRS module, which isencapsulated in castle hole. Stable performances, compact appearance, high cost performances, and can meet various need of customers. SIM800C works at GSM/GPRS 850/900/1800/1900MHz, which can realize the transmission of voice, SMS and data information with low power consumption. With a size of 17.6x15.7x2.3mm, SIM800C can meet the design requirements of various compact products. Made of high-quality materials, exquisite workmanship, very good quality and long service life. Specifications: Material:ABS Quad-band 850/900/1800/1900 MHz GPRS multi-slot class 12/10 GPRS mobile station class-B Corresponds to GSM phase2/2 + Class 4W (2Wat 850/900 MHz) Class1 (1W @ 1800/1900 MHz) Bluetooth-compatible: 3.0+EDR Size:Approx. 17.6x15.7x2.3mm/0.69x0.62x0.09inches Weight: 1.3g Supply voltage range 3.4-4.4 V Operating temperature: -40 ° C-85 ° C Package Includes: 1x Transmission Module note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.