Get instant and accurate weather measurements when you have the Weather@Point Compact Weather Station. Fitting on a keychain, this device attaches to your smartphone to bring you weather metrics. These include temperature, humidity, UV, atmospheric pressure, altitude, and ambient light. It plugs directly into your 3.5mm port and is a cinch to use. Without the use of a battery or internet connection, all of this data appears instantly within the app. With Weather@Point, you can always get the latest information so you never have weather surprises. Then, all of this data is sent to the cloud to contribute to accurate weather record-keeping. Inside are four powerful sensors to measure each metric with precision. Once calculated, the weather report automatically populates in the app. In addition, the Weather@Point housing is waterproof and made of durable aluminum and titanium so you can carry it with you anywhere, even on your set of keys.