Maximize your pleasure tool with the Link Up Rechargeable Smart Pump, a sleek, durable penis pump made for superior suction and performance enhancement. Increase endurance, improve stamina and amplify your rod with 3 unique enhancement exercise modes. Travel lock features - hold for 3 seconds to turn on or off Quick air release button 3 unique exercise modes to build endurance like never before Sleek and durable design with superior suction at the push of a button Clear vacuum cylinder with universal measurements and a flanged base Removeable, soft, silicone sleeve Body safe, unscented, and phthalate free Complete charge in 1.5 hours, run time 12 hours USB rechargeable - charging cord included Beginner: sucks for 4 seconds, then releases slowly - repeats for 10 minutes Intermediate: sucks for 5 seconds, then holds pressure for 1 minute - repeats for 10 minutes Advanced: sucks for 8 seconds, then holds pressure for 4 minutes - repeats for 12 minutes MEASUREMENTS: 8" X 2.5" (20.25 cm X 6.25 cm)