Carabiner mounted analog compass with digital temperature display helps you navigate maps with confidence and ease, Air filled analog map compass with rotating navigation bezel, Digital thermometer, user selectable F or C display, Temp Working range from 14F to 122F, Dimensions: 3-1/2"" x 2-1/2"" x 3/8"", Consumer serviceable battery (SR1120W), SKU: LBMT3491