ice-PAD Cooling Vest, capable of cooling down to -23°C, with fan and battery for long-lasting use. - Product Name: ice-PAD Cooling Vest - Set Contents: Fan, Battery, USB Cable, AC Adapter - Temperature Adjustment: Cools down to a maximum of -23°C - Usage Time: 3 hours to 9.5 hours (depending on fan speed) - Power Specifications: USB Type-C, 5V/2A, 12V/1.5A Thank you for viewing.