Amplitude-Adjustable Innovation: This deep tissue massage gun features a bezel design for easy adjustment to offer easy relaxation. With the ability to fine-tune the amplitude from 8mm to 12mm for each body part, ensuring an optimal massage experience Effortless Operation: This muscle massager has an oversized bezel and a silicone-covered handle for an ergonomic grip that elevates overall comfort. Note: A clicking sound will accompany each amplitude adjustment to indicate successful changes Larger Battery Capacity & Type C Quick Charging: Equipped with 4*2600mAh batteries, this handheld massage gun supports fast charging and provides up to 4-5 hours of continuous use, perfect for extended sessions and ideal for travel with a portable case Customized Muscle Relief: Boasting 5 amplitudes and 5 speeds ranging from 1800 to 3000RPM with 5 professional massage heads to cater to your needs, RENPHO easy-to-use massage gun is perfect for daily relaxation routines and post-workout recovery sessions Screw-in Head Attachments: Ensures the threaded massage heads of this portable massage gun are firmly installed for a reliable massage experience. Indulge in luxurious comfort and quality materials that deliver a sensory delight unlike any other renpho massage gun