Start/stop the rolling ball: short press the switch key to change modes: in the starting state, long press the switch key. In smart mode (the blue indicator light stays on for 35 seconds), it will automatically enter standby mode after running for 5 minutes and can be reactivated by tapping. Normal mode (the green indicator light is on for 35 seconds) automatically shuts down after running for 5 minutes. Blinking red light: The battery is too low and needs to be charged. Blinking blue light: Charging in progress. Steady green light: Charging is complete. Fully charge before first use. The soft and skin-friendly silicone cover not only operates quietly but also enhances friction, making it more resistant to bites and more durable. Size: 4.3 x 4.3 x 4.3cm Material: ABS + Silicone Color: pink Package Contents: 1 x Rolling Ball 1 x Charging Type-C cable Only the above package contents; other items are not included. Note: Light reflection and different displays may cause the item color in the picture to differ slightly from the actual product. The allowed measurement error is +/- 1-3cm.