Please refer to: http://dx.com/p/126142 - Color: Black - Material: ABS - Frequency: 433MHz - Operation range: 100m - Receiver with 3.0" LCD display - Functions: Time / calendar (2000-2099)/ alarm clock - Can display indoor temperature & outdoor pool temperature - Temperature range: -40 ~ +60'C (water) / 0~50'C (indoor) - 'C / 'F selectable - 3 receiving channels - Receiver uses 2 x AAA batteries (not included) - Transmitter with 1.4" LCD display - Transmitter can float on the water - Transmitter uses 2 x AA batteries (not included) - Comes with English manual