Introduction
Welcome to the Keychron BM25 Wireless Mouse User Manual. This guide provides comprehensive instructions on how to set up, use, and maintain your Keychron BM25 mouse.
In the Box:
- Mouse x 1
- Type-C Cable x 1
- Type-A Receiver x 1
- User Manual x 1
Product Overview
The Keychron BM25 is a versatile wireless mouse designed for comfort and performance, offering multiple connectivity options.
Parts Identification:
Diagram showing the top, bottom, and side views of the Keychron BM25 mouse, along with the 2.4GHz receiver. Callouts indicate the following parts: ① Left button, ② Right button, ③ Middle wheel button, ④ Forward button, ⑤ Backward button, ⑥ DPI button, ⑦ Pair button, ⑧ Modes toggle, ⑨ Mouse indicator light, ⑩ 2.4 GHz Type-A receiver, ⑪ Receiver Compartment.
Connection Modes
Wired Mode
When the mode switch is in the wired position, the mouse will not respond if the cable is not connected.
To connect in wired mode:
- Connect the Type-C cable to the mouse's Type-C port and the other end to a USB port on your device.
- The mouse is ready to use once the indicator light turns on.
Note: When connected by cable, the mouse defaults to wired mode even if the toggle is set to Bluetooth or 2.4GHz mode.
Diagram illustrating Wired Mode: A laptop is shown connected to the mouse via a USB Type-C cable.
2.4GHz Mode
To connect using the 2.4GHz receiver:
- Switch the mouse's bottom toggle to the "2.4G" mode. The mouse will automatically enter 2.4GHz pairing mode, and the mouse indicator will slowly flash green.
- Connect the 2.4GHz receiver to a USB port on your device. Once successfully connected, the mouse indicator will turn solid green for 3 seconds before dimming off.
- In 2.4GHz pairing mode, the mouse indicator will slowly blink green for up to 3 minutes. If the mouse is not connected within this time, the indicator will turn off.
To re-pair the connection:
- Hold the "Pair button" for 3 seconds to re-enter pairing mode.
- If you need to repair the connection, first unplug the 2.4GHz receiver. Then, hold the "Pair button" for 3 seconds until the mouse indicator starts flashing green. Finally, plug the 2.4GHz receiver back in to complete the pairing process.
Note: It is recommended to keep the mouse within 20cm of the receiver when pairing in 2.4GHz mode.
Diagram illustrating 2.4GHz Mode: The mouse switch is set to "2.4G". A USB receiver is shown, and a laptop is depicted, indicating connection via the receiver.
Diagram showing a finger pressing and holding the "Pair button" on the underside of the mouse for 3 seconds to enter forced pairing mode.
Bluetooth Mode
To connect via Bluetooth:
- Switch the mouse's bottom toggle to the "?" (Bluetooth) mode. The mouse will automatically enter Bluetooth pairing mode, and the mouse indicator will slowly flash blue.
- On your device, open Bluetooth settings, search for a device named "Keychron BM25", and click "connect" to complete pairing.
- When in Bluetooth pairing mode, the mouse indicator will slowly blink blue for up to 3 minutes. If not connected within this time, the indicator will turn off.
To reconnect or pair with a new device:
- Hold the "Pair button" for 3 seconds to re-enter pairing mode. The mouse indicator will slowly blink blue.
- You can then connect your new device to the mouse.
Diagram illustrating Bluetooth Mode: The mouse switch is set to "?". A laptop is shown with Bluetooth enabled, and a status box indicates "Keychron BM25" as "disconnected" or "connected".
Diagram showing a finger pressing and holding the "Pair button" on the underside of the mouse for 3 seconds to re-enter pairing mode.
Indicators
Status Indicator
The mouse indicator light provides information about its connection status and power level.
| Mode/Status | Indicator Behavior |
|---|---|
| 2.4 GHz Mode | Slowly blinks green - Ready to be paired. Quickly blinks green - Pairing with the previous device. |
| Bluetooth Mode | Slowly blinks blue - Ready to be paired. Quickly blinks blue - Pairing with the previous device. |
| Low Power | Slowly blinks red. |
Diagram showing the mouse with callouts pointing to the indicator light, illustrating status indications.
DPI Indicator
The DPI indicator changes color based on the selected DPI level.
| Light Color | DPI Value | Light Color | DPI Value |
|---|---|---|---|
| White light | 400 DPI | Yellow light | 1600 DPI (default) |
| Green light | 800 DPI | Red light | 2400 DPI |
| Blue light | 1200 DPI |
Diagram showing the mouse with callouts pointing to the indicator light, illustrating DPI color changes.
Report Rate Indicator
The report rate (polling rate) of the mouse can be indicated by the LED color.
| Report Rate Indicator | Report Rate / Hz | Available Modes |
|---|---|---|
| White | 125 | 2.4G / BT / Wired |
| Green | 500 | 2.4G / Wired |
| Blue | 1000 | 2.4G / Wired (default) |
Note: There is no physical report rate indicator on the BM25 mouse. To modify the report rate, configure it via the mouse driver software.
Features
Auto-Sleep Mode
The mouse will not enter auto-sleep mode when in wired mode. In 2.4GHz or Bluetooth mode, the mouse will automatically enter auto-sleep mode after 10 minutes of inactivity to save battery. Move or click the mouse to wake it up.
Driver Software
You can download the Keychron BM25 mouse driver from launcher.keychron.com. If the driver software cannot connect to the mouse, please contact Keychron for technical support.
How to Factory Reset
To perform a factory reset, simultaneously hold down both the "DPI button" and the "Pair button" for 3 seconds. The mouse's overall LED light will blink three times, indicating that the factory reset was successful.
Diagram showing a mouse with the DPI button and Pair button highlighted, with an instruction to hold them simultaneously for 3 seconds to initiate a factory reset.
Charging Indicator Explanation
| Status | Indicator Behavior |
|---|---|
| Fully Charged | The mouse indicator will stay GREEN. |
| Low Power | The mouse indicator will slowly blink RED. |
| Charging | The mouse indicator will stay RED. |
The mouse is compatible with all USB ports. For the best signal and charging speed, connecting to a USB 3.0 port is recommended when charging or in use.
If the mouse is connected via USB Type-C cable for charging but is not paired with any devices:
- The mouse indicator will stay RED while charging.
- The mouse indicator will stay GREEN when fully charged.
Note: The product supports up to 5V charging voltage and 300mA charging current. Keychron is not responsible for any issues caused by improper recharging.
Mouse Specifications
| Specification | Details | Specification | Details |
|---|---|---|---|
| Device name | Keychron BM25 | Battery capacity | 600mAh |
| Size | 107*65*38mm | Usage duration | 98 Hours |
| Weight | 79 ± 3g | Recharge time | 2 Hours |
| Sensor | SOC3212 | Charging port | Type-C |
| Wireless distance | Approx 10m of open space | Resolution | 400-2400DPI |
| Mouse micro switches | Huano Micro Switch (10 million clicks life time) | Report Rate (polling rate) | 125Hz(White) - 500Hz(Green) - 1000Hz(Blue) |
| Connection mode | 2.4GHz - Bluetooth - Wired |
Contact & Support
Keychron, Inc.
Dover, DE 19901, United States
Find us at:
- Website: https://www.keychron.com
- Email: support@keychron.com
- Facebook: f @keychron
- Instagram: @keychron
- X (Twitter): X @keychronMK
Designed by Keychron
Made in China
China Distributor:
渴创技术(深圳)有限公司 (KeChuang Technology (Shenzhen) Co., Ltd.)
Address: Room 201, Building 2, Wenkeng Industrial Zone, Da Fa Road 24, Bantian Street, Longgang District, Shenzhen City.
Standard: GB 4943.1-2022
Customer Service Hotline: 400-0766268
