While the San Andreas Massage Gun produces up to 3200 pulses per minute with its powerful motor, it remains muted. With its ultra-quiet brushless motor, you can have the comfort of massage while travelling, or working in the office without disturbing those around you. There is also a built-in 5000mAh power bank so you can charge your mobile device with a USB cable. Small in size, tectonic in function, 3 different percussion speeds provide a perfect massage experience with gradually increasing pulse frequency. Comfortable to hold, strong and ultra-light, the vibration generated by the device does not cause any discomfort to your wrist. Set Contains: 1 Massage gun, 4 gun-heads attachments,1 USB/Type-C charge cord, user manual, 1 Premium Travel Case Specifications: Material: ABS + electroplating Product size: 5.32" x 3.62" x 1.85" Net weight: 379g/13.36oz Gross weight: 621g/21.94oz Battery capacity: Li ion cell 5000mAh 3.7v/18.5wh Type C Input: 5V 2A (max) USB-A output: 5V 1A 4 heads: spherical/flat/ U-shaped/conical Massage head 3 speeds: 2400rpm, 2800rpm, 3200rpm