Arduino MKR NB 1500 BoardFeatures-Easy to use and interfaceMicrocontroller Microchip Technology SAMD21 Cortex-M0+ 32bit low power ARM MCUModem U-Blox SARA-R410M-02BGSM uFL connectormicroSIM slotOperating Voltage 3.3VInterfaces I2S, I2C, UART, SPIPinout (Digital, PWM, Analog) 22 I/O Digital (12 PWM), 7 Analog inputForm factor 67.64mm × 25.00mm MKRGood quality product..