The Casio MQ-27-1B is a small black rectangular analog watch that turns a modest purchase into a surprisingly persuasive argument for angular case shapes.
Call it the Blacktangle, the Casio Black Tank or simply a very cheap way to learn whether rectangular watches suit your wrist; either way, this little Casio gets the proportions right.
A black rectangle with almost no baggage
The MQ-27-1B is about as simple as a watch gets, with a black resin case, a black strap and a dial layout that avoids trying to be more important than it is.
That plainness is the point, because the watch works as a low-key travel piece, a daily beater and a no-pressure experiment in non-round watch design.
At 37.2 × 26.5 × 8mm and just 19 grams in resin, it has the sort of dimensions that make sense on a slim wrist rather than merely looking small on paper.
The 26.5mm case wears better than expected
Rectangular watches can be difficult to judge by width alone, because the strap, lug shape and case length do as much work as the headline measurement.
Here, the MQ-27-1B benefits from a strap that feels visually close to the case width, giving the watch more presence than its 26.5mm measurement suggests.
On a wrist around 16cm, the case sits neatly and the 8mm thickness keeps it tucked close, which is exactly what you want from an unfussy travel watch.
The only giveaway that this is an inexpensive resin Casio is the familiar excess strap tail on a smaller wrist, but that is hardly a deal-breaker at this price.
A useful gateway into Tank-style proportions
The MQ-27-1B is not trying to be a Cartier Tank, a Jaeger-LeCoultre Reverso or any other dress-watch icon, but it does let you test that visual language for almost no money.
That makes it especially interesting for collectors who have lived in larger round watches and are curious about smaller, sharper cases without jumping straight into a serious purchase.
The watch also shows how a small rectangle can feel balanced rather than delicate, especially when the case and strap read as one continuous black shape.
The price is part of the charm
Around £20 feels like the natural buying point for the Casio MQ-27-1B, although prices can swing noticeably depending on retailer and timing.
At that level, it is not a watch to overthink; it is a practical, lightweight Casio that happens to open the door to an entirely different set of wrist proportions.
The Blacktangle will appeal most to slim-wristed buyers, frequent travellers and anyone curious about rectangular watches but not yet ready to spend Tank money.
It is simple, cheap and easy to wear, which is often exactly why a Casio earns more wrist time than watches that cost far more.
