120 - Bike computer B'twin - Free user manual and instructions
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| Product type | Bike computer |
| Brand | B'Twin |
| Model | 120 |
| Category | Cycling computer |
| Display type | LCD |
| Display size | 45 x 25 mm |
| Power source | 1 x CR2032 low-drain battery |
| Battery life | Approx. 12 months |
| Dimensions | 55 x 42 x 20 mm |
| Weight | 35 g |
| Mounting | Handlebar bracket included |
| Water resistance | IPX4 splash-proof |
| Functions | Current, average and max speed, trip and total distance |
| Trip distance | Resettable up to 999.9 km |
| Total odometer | Up to 9999.9 km, stored in memory |
| Clock | 12/24 hour display |
| Auto start/stop | Yes, via speed sensor |
| Auto scan | Automatically scrolls through display modes |
| Measurement units | km/h or mph selectable |
| Wheel size calibration | Manual setup with circumference value |
| Storage | Dry and cool place |
| Safety | Ensure secure mounting to prevent falls |
Frequently Asked Questions - 120 B'twin
How to reset the trip distance on the B'Twin 120?
Press and hold the right button for 3 seconds while the display shows the trip distance. The value will reset to 0. Make sure you are in TRIP mode.
What type of battery does the B'Twin 120 use and how do I replace it?
The computer uses a CR2032 coin cell battery. To replace it, open the battery cover on the back, insert the new battery with the positive (+) side up, and close the cover securely. An estimated battery life is 12 months.
How to install the B'Twin 120 on my handlebar?
Place the handlebar bracket on the bar, use the silicone shims for a snug fit, and fasten the zip ties. Then slide the computer into the bracket until it locks. Ensure it is secure before riding.
How do I set the wheel size or circumference?
Enter SETUP mode by pressing both buttons simultaneously. Use the left button to change digits and the right button to confirm. The circumference is set in millimeters. You can find it in the user manual for your tire size.
Why does the speed always display 0.0?
Check that the magnet on the spoke is aligned with the sensor on the fork or frame. The gap should be less than 5 mm. Also ensure the sensor cable is not broken or disconnected.
Is the B'Twin 120 waterproof?
It has an IPX4 rating, meaning it is resistant to water splashes from any direction. You can ride in light rain, but do not submerge it in water or use high-pressure jets.
How to switch from kilometers to miles?
Enter SETUP mode, scroll to the unit option, and toggle between km/h and mph using the buttons. Confirm your selection with the right button. The display will now show the chosen unit.
Can I see the current time with this bike computer?
Yes, the B'Twin 120 includes a clock with 12/24-hour format. You can adjust the time in setup mode. It will be displayed in one of the cycling data screens.
How to clean the B'Twin 120?
Wipe the device with a soft, slightly damp cloth. Do not use chemicals or alcohol, as they may damage the plastic. Dry it with a soft cloth after cleaning.
What does the auto scan feature do?
The auto scan feature automatically switches between speed, distance, and clock every few seconds. It helps you view all data without touching the buttons. To keep a fixed display, press the left button to set it to manual mode.
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USER MANUAL 120 B'twin
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Product information
Brand : B'twin
Model : 120
Category : Bike computer