This unique Kisai Blade Watch by Tokyoflash, inspired by aviation and automotive themes, features a custom made turbine-style lens beneath which digital tube LEDs rotate like a propellor to display the time. The Kisai Blade is framed by an industrial-looking sandblasted stainless steel case with brushed detail. Don’t worry about changing the battery, the Kisai Blade is USB rechargeable. To recharge, connect to your computer with the USB cable provided. One full charge will take 3.5 hours and each charge should last 1 month.