ICEMAN BEST PRO ICMP2-BLV-SET Unused, brand new. Battery only has been tested for power-on. 【Cooling Function】 The ICEMAN PRO VEST features a cooling system that uses plastic bottles. By charging the back with approximately 150ml of cold water, it effectively cools the body. 【Battery Performance】 It has a built-in 5200mAh large-capacity battery, allowing for long hours of use. It's a perfect item, especially for hot summers. 【How to Use】 It can be used in 3 easy steps: simply attach a plastic bottle and turn on the battery to start cooling. - Brand: ICEMAN - Model Name: ICEMAN PRO VEST - Battery Capacity: 5200mAh - Cooling Method: Uses plastic bottles - Cooling Bottle Capacity: Approximately 150ml - Compatible Cooling Bottle: 650ml Thank you for viewing.