This cordless vibrating massage tool targets deep tissue to help relieve muscle soreness and stiffness while improving circulation and range of motion.What it does: It is the brand's strongest percussion device, offering deep-penetrating relief to stiff muscles, so you can train harder and recover faster. You can choose the speed that's right for you-cycle through five levels of percussion with the digital speed dial.Additional features: Warm up and recover like the pros do, with guided routines from top athletes and automatic speed adjustment with the Bluetooth® connected Hyperice App, powered by HyperSmart™ technology. The pill-shaped grip lets you have a comfortable hold.Includes: Hypervolt 2 Pro, power supply, adapters, five head attachments and head attachment pouch.Sizing information: 2.6 lb.; 8" x 2.5" x 10.4". 3-hours battery life Brushless high-torque 90W motor Requires lithium ion batteries (included) Imported