Small case, big personality. The Hamilton Jazzmaster Performer Auto 34mm H36105140 packs the polish of a dress watch and the toughness of a sports watch into a size that sits beautifully on slimmer wrists, with a sunburst blue dial that shifts from bright cobalt to deep navy as the light moves.

The Performer is Hamilton's sport-chic take on the Jazzmaster line, and the details back up the attitude: a fixed steel bezel with a 60-minute scale, a screw-down crown and 100 meters of water resistance, which is rare in a refined 34mm automatic. Inside is the Swiss H-10 caliber, a self-winding movement with an 80-hour power reserve and an anti-magnetic Nivachron balance spring, visible through the open caseback.

On its stainless steel bracelet it moves easily from office to brunch to the pool deck. Dauphine hands and stick indexes are treated with Super-LumiNova, and the 11.18mm case keeps it slim enough to slip under a cuff.

Hamilton Jazzmaster Performer 34mm Blue, Reference H36105140

• Case diameter and height: 34mm x 11.18mm, stainless steel
• Bezel: fixed, engraved 60-minute scale
• Dial: sunburst blue, dauphine hands, luminous stick indexes
• Caliber: Swiss H-10 automatic, about 80 hours of reserve
• Crystal: sapphire with anti-reflective coating
• Back: open caseback showing the rotor
• Water resistance: 100 m with screw-down crown
• Bracelet: stainless steel with push-button deployant clasp

A blue-dial Performer that proves a compact watch can still be the most capable one in the room.