Power on/off function with automatic shutdown after 5 minutes of inactivity. The four-bit smart power display accurately reflects the battery's state of charge to the remote. Features high, medium, and low gear settings with gear indicator and torque simulation, plus gear memory function that automatically restores the last used gear upon restart. Pulse function activates at 6 km/h with flashing light indication, assisting the rider during operation. Low voltage warning indicator flashes when battery voltage is low. Utilizes five-line digital communication for automatic parameter adjustment, allowing users to customize motor and speed settings according to different models. Instrument supports 36V and 48V power supply systems. Designed with upgraded waterproof connectors for improved weather resistance. Color: Black. Material: Composite material. Dimensions: 6 x 8 x 11.5 cm. Package includes: 1 x E-bike controller display. Note: Other items not included. Due to lighting and display differences, actual product color may vary slightly from images. Measurement tolerance: +/- 1-3 cm.