I use a Norelco Electric Razor Shaver, Model 6705X. It's a rechargeble, wet razor. I can use it for about 2 weeks before I need to charge it up again. It also has built in shaving gel packets. It's great for shaving in the shower.

I love it for travel. I trim my beard and hair before I leave and the razor takes my through the next 2 weeks.