Seeed + Hackaday, Tiny BLE

Intro

The Tiny BLE is a Bluetooth Low Energy development board designed with low energy consumption and small size in mind. 
It's integrated with current measurement feature to provide real time energy consumption data, which is essential for 
developers to optimize software to design long battery life devices. It supports ARM mbed cloud-based IDE with an handy C/C++ SDK 
and a large number of open source libraries, which makes prototyping and development extremely easy. Further, to keep it small, 
we use modular design to enable it divide into two parts - CMSIS DAP interface part and BLE part.

LED power consumption

Reference

Github - Seeed-Studio/Tiny_BLE