[Fits Phones Under 6.5 Inches]: Compatible with most pedometers and smartphones under 6.5 inches. [Safe and Quiet Operation]: Made of smooth plastic material that won't scratch your pedometers, smartphones, or devices. Equipped with metal wheels on both sides to ensure quiet operation, minimizing noise and disturbance during nighttime use. The rubber band allows the support plate to securely hold two phones at once, enabling you and your family to track steps quietly. [Supports 2 Phones]: Unlike other models that support only one phone, this device lets you share the experience of increasing step count with family and friends. [Easy Installation & Basic Function]: The phone swing requires USB power (cable included). Place your phone on the bracket, secure it with the rubber band, connect the power supply, and gently push to start. It will swing automatically to help increase step count. [Multipurpose Use]: Ideal for mobile apps that require motion, such as walking-based pet hatching games. Simply place your phone on the shaker to simulate movement. Features: Magnetic Type: Desk Holder Model Number: Mobile Shaker Compatibility: Universal Charger: Cable Color: Black Material: Plastic Package Contents: 1 x Mobile Phone Shaker Note: Other items not included. Due to lighting effects and monitor settings, actual product color may vary slightly from images. Measurement tolerance: +/- 1-3 cm.