Description Product description:1. Temperature and Humidity Functions: Temperature and humidity readings show directly.The upgraded version has an external sensor, which can place the sensor line outdoors, and can display indoor and outdoor temperature at the same time.(Sensing line length : 1.3 M)2. Time Function: Besides the basic time display, these item also has alarm clock and calendar display (month and date)3. Simple Design: With the little bracket on its back side ,it is easy to place and carry4. Battery Operation: Require 1 x AAA battery (not include) Specification 1. HTC-1Material: ABS Color: White+Balck Item dimensions: 103 x 93 x 21.5mm Quantity: 1 piece Measuring Temperature range: -10C~+50C (14F~+122F) Measuring Humidity range: 10%~99% RH2.