Skulpt, which makes a fitness device that can accurately measure muscle quality and body fat percentage, has closed a $4.1M Series A funding round, led by Nautilus Venture Partners and with participation of returning investor Caerus Venture Partners. The new money will be used for expansion into retail for 2016 and to enhance Skulpt’s mobile app functionality including personalized, data-driven fitness plans.

The news comes on the heels of Skulpt’s unveiling of the Chisel, the company’s next-gen product which already won the CES 2016 Innovations Award.

“We plan to expand into retail in 2016 and grow our team to continuously improve our app for current and future customers,” said Jose Bohorquez, the co-founder and CEO of Skulpt. “Our vision is to help people improve their health and fitness efficiently, by using information about their bodies that they can’t get anywhere else.”

Skulpt’s device can accurately measure muscle quality and body fat percentage.Chisel has also been launched on crowdfunding website Indiegogo campaign last week, enabling users to gather data about the quality of individual muscles to better understand their bodies and succeed in fitness training. That campaign has already surpassed its goal of raising $100,000, with more than two weeks to go. Interested users can pre-order their Chisel unit for $99.

Skulpt’s EIM technology was developed at Harvard and MIT and is currently used in top research hospitals across the US.