If you do not have a Gymboss, here are some options to get you started: Downloadable interval timer Online interval timer
Online stopwatch and count down timer Gymboss app for iPad, iPhoneand iPad
Options: Premium package adaptive Sport Seats ($ 5,265); infotainment package with Bose surround sound system including navigation, SiriusXM satellite radio receiver, HD radio receiver,
online services, Bose surround sound system ($ 3,860); espresso natural leather interior ($ 3,535); Porsche Doppelkupplung PDK ($ 3,200); 20 - inch Carrera Classic wheels ($ 2,730); sport chrono package including dynamic engine mounts, analog and digital
stopwatch ($ 2,370); Porsche active suspension management ($ 1,790); Porsche torque vectoring ($ 1,320); ParkAssist ($ 860); ventilated seats ($ 730); platinum silver metallic paint ($ 710); six - disc CD changer ($ 670); SportDesign steering wheel ($ 490); light design package including LED ambient lighting on overhead console, door handles, door storage compartments, front footwells, vanity mirrors, luggage compartments ($ 340); power steering plus ($ 270); colored wheel caps in Porsche crest ($ 185)