Mr Singh, the minister for Micro Small and Medium Enterprises, unveiled the special jacket at his constituency Khanwa in Nawada. "It is a blend of cotton from Khanwa and technology," the minister said to reporters.
The self-cooling linen jacket offers its wearer two options - the red button for heat and the green button to dial it down. The difference could be 20 degrees, say those involved in developing and designing the jackets.
Reports suggest the jacket is fitted with cold and hot air fans, which are battery operated. An MIT graduate reportedly helped devise this "climate gear" technology.
Mr Singh, who launched "solar charkhas (spinning wheels)" just months ago in the same region, says the jacket will be a boon for soldiers at the frontlines. Imagine its benefits in Siachen, the world's highest battlefield where temperatures can drop to 50 degrees below zero.
For now it is tentatively priced at Rs 18,000 for a half jacket and Rs 25,000 for a full-sleeved one.
Students of the National Institute of Fashion Technology or NIFT helped come up with the design of the wear-your-own-AC.
Excited by the innovation, Mr Singh tried his own ad line - "From blazing Rajasthan to ice-cold Siachen," this jacket keeps you cool and calm.