Feature 1Effective Improvement: Mini massager is designed for deep muscle healing, recovery and pain improvement. It helps users to increase blood flow, quickly improve muscle pain, relieve nodules, and relax your whole body. 2Humanized Design: The 5th speed of deep tissue massager is pressure variable speed, which effectively prevents bone damage and takes care of muscle health. Available in 4 speeds, up to 3000 rpm, which can be switched at the touch of a button. Small but powerful compact design makes it easier to use alone. 34pcs Massage Heads: Portable percussion muscle massager has 4 shapes of interchangeable heads that target specific muscle groups to speed up recovery. Can be widely used for shoulder and neck, back, legs, soles of the feet and other parts. 4Silicone Material: Mini massager's massage head is made of silicone, which is more resistant to dirt than ordinary foam material. Waterproof and easy to clean. Don't worry about sweating or getting dirty. 5Long Battery Life: Deep tissue massager is powered by a 2000mAh battery that can support over 15 days of duration (30 minutes per day) when fully charged via USB C. Usage time varies depending on the speed selected.SpecificationItem Type: Mini MassagerMaterial: Silicone, MetalFunction: MassageUse Time: 6-9 HoursBuilt in Battery: Lithium Battery 2000mAhRotational Speed: 3000r/min Package List1 x MiniMassager4 x Massage Head1 x Charging Cable1 x Instruction Manual