PROMATE SamoTri Black Tri-Connect Wireless Mouse / Dual Bluetooth 5.0 / 2.4GHz Connectivity / Multi-Device Switching (Up to 3 Devices) / Smart Flying Adaptive Scroll Wheel / Adjustable DPI Up to 3200 / Rechargeable 500mAh Battery / Up to 100H Usage / USB-C Fast Charging / Ergonomic Design / SAMOTRI.BLACK / SAMOTRI.BLACK

The Promate SamoTri is a tri-connect wireless mouse in black, pairing over two Bluetooth 5.0 channels or a 2.4GHz link and switching between up to three devices. It runs an adjustable sensor to 3200 DPI, a smart flying adaptive scroll wheel and a rechargeable 500mAh battery good for up to 100 hours of use.

Three wireless channels are built in: two independent Bluetooth 5.0 connections and a 2.4GHz link. Bluetooth suits tablets and laptops with no spare port, while 2.4GHz is the lower-latency option for a desktop. Having both means the SamoTri fits whatever the machine in front of you actually supports.

Multi-device switching covers up to three machines, so one mouse can serve a work laptop, a personal desktop and a tablet without re-pairing each time. For anyone running two screens fed by two different computers, that switch replaces the daily routine of dragging a second mouse across the desk.

The smart flying adaptive scroll wheel changes behaviour with how hard you spin it, so a nudge moves a line and a flick sends the wheel spinning through a long document. Free-spinning wheels are the single biggest time saver in spreadsheets and long web pages, where clicked scrolling means dozens of separate movements.

Sensitivity is adjustable up to 3200 DPI. Lower settings suit fine selection work in design tools and spreadsheets, while the top of the range covers large or high-resolution displays where a low-DPI mouse needs several sweeps to cross the screen once.

A rechargeable 500mAh cell supports up to 100 hours of use, so the SamoTri is charged in weeks rather than days under normal working patterns. Built-in rechargeable batteries also remove the running cost and the drawer of dead AA cells that come with disposable-battery mice.

Charging runs over USB-C with fast charging support, so the SamoTri uses the same cable as most current phones, laptops and peripherals. Fast charging matters on a mouse mainly because a short top-up during a coffee break is enough to get through the rest of the working day.

The SamoTri uses an ergonomic body contoured for the hand rather than built as a flat slab, and this version is finished in black. Shape is what determines whether a mouse is comfortable four hours in, and it is the one specification that no amount of sensor performance can compensate for.