Can shake two mobile phones at the same time Use two mobile phones to flash the steps at the same time, no need to worry about switching between two mobile phones. Zero wear high speed bearings Using cost-effective high-speed bearings to truly achieve permanent wear-free Intelligent control of brush frequency Intelligent simulation of daily walking, running, and leisure, making it more realistic Silent and noise-free throughout the process Quiet and noise-free, environmentally friendly, energy-saving and pollution-free, you can also refresh your steps while sleeping at noon Plastic magnetic isolation material that does not damage mobile phones Plastic magnetic isolation is used to isolate the interference of the magnetic field on the mobile phone during the operation of the pedometer and will not damage the mobile phone. Product parameters Product name: Mobile phone pedometer Power supply method: USB power supply Using a mobile phone: 7.2-inch smartphone with pedometer function Product material: ABS+304 stainless steel Step speed: about 8000 steps or more/hour Product accessories: base, frame, USB cable, rubber band Instructions for use: Put the mobile phone into the frame and fix it with a rubber band. After powering on, just push it with your hand. include:1set mobile phone brusher