2.3 Display and controls
EV155 has a 240 × 280 color display with an on-screen menu, operated with the button on the device. The display shows the Bluetooth codec currently in use.
Button operation
| Action | How |
|---|---|
| Power on | Press and hold the button for about 1 second |
| Power off | Press and hold the button for about 3 seconds |
| Open the menu | Press and hold the button for about 1 second |
| Browse the menu | Use the button to move between items |
| Confirm | Short-press the button |
| Adjust volume on the Home page | Use the button |
| Choose the Home page | Hold the button for about 3 seconds, then select and confirm with the button |
| Pair | Bluetooth → Pair, or double-press the button to enter pairing |
| Choose a codec | Bluetooth → Codecs |
| Factory reset | System → Factory Reset |
Ship Mode
- Unplug the USB-C cable before entering Ship Mode.
- To exit Ship Mode, press and hold the button for about 1 second.
Hardware restart
If the device stops responding, disconnect USB-C and press and hold the button for about 10 seconds to restart it.
Sound adjustment
The menu provides EQ presets, and a custom EQ can be set in the app.