Product information: Power type: battery type Function: Timing Color: white, spring pink, green Material: ABS stainless steel ribbon Product Size: 87.5*42 * 29.5MM Input voltage: DC 5V/1A Rated Power: 0.5W Work current: 0.2A-1.3A Function mode: θ theta wave (default for startup)/α Alpha wave Pulse gear: 5-speed rotation adjustment Light: gear adjustment light (blue) Charging time: 2H Use duration: 50 times Battery capacity: 500mAh Polymer 3.7V Timing: use 20min to automatically shut down Charging Interface: Type-C