Price For: Each Manufacturer: Adafruit Product Category: Bluetooth / 802.15.1 Development Tools RoHS: Product: Development Boards Tool Is For Evaluation Of: nRF51822 Frequency: 2.4 GHz Operating Supply Voltage: 3.3 V Brand: Adafruit Description/Function: Development board with ARM Cortex M0+ and BTLE module Dimensions: 51 mm x 23 mm x 8 mm For Use With: ATSAMD21G18, nRF51822;Interface Type: I2C, SPI, UART, USB Series: