Precise details:

Specifications：
Product Name: M109 Wireless Mouse with TF Card Reader
Operating Mode: BT5.1 Connection
Chip: PixArt 3065
Polling Rate: 250Hz
Speed: 28 inch/s
Refresh Rate: 3000FPS
Acceleration: 10G
Resolution: 800/1200/1600
Number of Buttons: 4 Keys
Button Lifespan: 3 million clicks (silent switches)
Material: ABS
Voltage/Current: 5V/500mA
Operating Distance: 10M
Battery Capacity: 120mAh lithium battery
Charging Cable Length: 20cm
TF Card Read/Write Speed: 20MB/s (Supports up to 2TB capacity)
Data Transfer Indicator: bluetooth indicator flashes during data transfer.
Charging Status: Steady green light during charging; light turns off when fully charged.
Low Battery Alert: Red light flashes when battery is low.
Re-pairing: Press and hold the sensitivity switch for 2 seconds to re-pair via bluetooth.
Dimensions: 7.8×3.8×2.2cm
Weight: 27g
Package Dimensions: 11×7×3cm
Package Weight: 61g

Features:
1. Technical Specs: Emphasizes high-speed performance (3000FPS refresh rate) and lightweight design (27g), ideal for portable use.
2. Multi-OS Support: Universally compatible with mainstream operating systems, including niche Linux distributions.
3. User-Friendly Indicators: Clear LED alerts for charging/data transfer, enhancing usability.
4. TF Card Functionality: Unique 2TB storage support expands utility beyond standard mouse functions.
5. Ergonomic Design: Compact size (7.8cm length) suits small hands or mobile work scenarios.

Package Include:
1× M109 Mini Wireless Mouse
1× USB-C to USB-C Cable (20cm)
1× User Manual

Compatible Systems:
Windows, for MacOS, Linux, iOS, Android, and other bluetooth-enabled devices with the latest systems.

Operation and connection instructions:
1: Wireless connection:
Step 1: Push the power switch at the bottom of the mouse to the "ON" position, the blue light at the mouse bluetooth indicator lights up and flashes, and it starts to enter the pairing mode.
Step 2: Turn on the tablet/computer/mobile phone, click the "BT" interface in the settings menu, connect the paired mouse (BT5.1Mouse), and the blue light will go out immediately after connecting to the device, and enter normal mode.
Step 3: Move the mouse or press the left and right buttons to use it normally.
Note: If you encounters a device that cannot search for BT5.1 Mouse, press and hold the bottom sensitivity switch for 2 seconds to restart the pairing mode of bluetooth, and you can search for the BT5.1 Mouse device. Connect the device and you can use it.
2. TF card reading and writing
Step 1: Open the TF card slot cover at the tail of the mouse.
Step 2: Insert the TF card into the mouse in the direction prompted.
Step 3: Use a TYPE-C data cable with data transmission function, insert one end into the mouse and the other end into the computer/tablet/mobile phone.
Step 4: After inserting the data cable, the TF card indicator light flashes quickly to read the TF card data, and the indicator light is always on after the reading is successful.
Step 5: Open the disk of the computer/tablet/mobile phone to see the mobile disk read out.
Step 6: You can read and write to the disk, and the indicator light will flash quickly during reading and writing.
Step 7: After reading and writing, right-click the mobile disk to eject it safely, then press the TF card to eject the TF card from the card slot. You can also keep the TF card inside the mouse, then buckle the TF card slot cover and use the mouse normally.
* Maximum supported read capacity 2TB Average read and write speed 20M/S.

Notes:
1: It is recommended to use the USB port of the computer to charge the mouse. When charging, the indicator light turns green, and when fully charged, the charging indicator light turns green.
2: When the mouse cursor moves slowly, please check whether the battery is low. It is recommended to charge it in time.
3: When the mouse cannot be connected, please check whether the power switch at the bottom of the mouse is turned on, or press and hold the sensitivity switch to restart the pairing mode to connect and use it normally.