La Crosse Technology WS-8157U-CH-IT Atomic Clock with Outdoor Temperature and Weather Forecast. This thing is amazing i put batteries in it let it sit and an hour later it had the right time and everything. I use this in my work shop cause i always seem to get involved into a project then realize thats its 3AM. But this always lets me know the time and when its time to go to bed, it has an alarm clock too. The only thing i wish it had mainly because I work in my wood shop. would be a hydrometer so i could know what to expect wood drying and splitting rates to be. But since that dosent apply to most people this is an outstanding buy!