PV111 Cool Vest Set with cooling function using four Peltier fans, USB Type-C charging, and a 10000mAh battery. I bought this about a year and a half ago, but it didn't suit me. I've only used it once or twice, so it's in very good condition. The vest and battery are included, but the battery charger is missing. It uses Type-C, so a substitute should work. - Model Name: PV111 - Cooling Method: Peltier cooling & heating - Battery Capacity: 10000mAh - Input Type: USB Type-C - Temperature Adjustment: COOL & HOT - Set Contents: Vest, Battery, Fans Available for immediate purchase. Thank you for looking.