RAPT Pill Hydrometer & Thermometer - includes 18650 battery
001TB Battery for 001TH Digital Pocket Thermometer (001TB000000) | RefrigiWear
Factory Direct High Quality China Wholesale Oral Digital Thermometer Battery 1.5v Lr41/ag3/192 Low Price Alkaline Button Cell For Car Key/watch $0.02 from Shenzhen Pkcell Battery Co. Ltd | Globalsources.com