Ming x Massena Lab 17.09vsYema Wristmaster Slim CMM.20

The Ming x Massena Lab 17.09 is praised for its excellent build quality, unique multi-layered honeycomb dial with laser-etched numerals on sapphire crystal, and a distinct 3D effect. Owners widely report it keeps great time and is highly recommended as a daily wearer. The 38mm stainless steel case features a mix of polished and brushed finishes, with flared lugs being a signature design element. The watch is powered by a Sellita SW330-2 GMT movement with independent hour setting. Some owners find the collaboration logos on the dial detract from the design, and one owner notes the dial appears silver/gray rather than pitch black as in promotional images. One reviewer flagged issues with the hour gear spring and independent hour setting mechanism on early units, leading to an extended warranty. On balance, owners and reviewers rate the Ming x Massena Lab 17.09 highly for its unique dial design and over-delivery on quality for the price.

The Yema Wristmaster Slim CMM.20 is widely praised for its compelling integrated bracelet design and comfortable 39mm wearability. Reviewers highlight its impressive value, featuring an in-house CMM.20 micro-rotor movement with a 70-hour power reserve, adjusted to -3/+7 seconds per day, all within a slim 9mm case. Some note the domed sapphire crystal can produce glare and the dial text is quite small. On balance, reviewers rate the Yema Wristmaster Slim CMM.20 highly for its integrated design and value proposition with a micro-rotor movement.