Bluetooth® Version: 5.0 (2Mbps mode) Frequency: 2402 to 2480 MHz Output power: +4dBm typ. Single power supply: 1.7 - 3.6V Single Mode Bluetooth® low energy Integrated System/Sleep Clock Integrated high performance ceramic chip antenna ARM Cortex M4F 32bit processor and 512KB flash and 64KB RAM Outline: 9.6 x 12.9 x 2.0 mm with 1mm pad pitch Interface: SPI, UART, I2C, I2S, PDM and 12bit ADC