1Zpresso Co. Ltd was founded by a group of coffee lovers with an engineering background. From the coffee users’ view, they develop innovative manual coffee grinders with a passion for specialty coffee.

1Zpresso J-Ultra Manual Grinder – Precision, Elevated.

If you’re chasing that next level in grind consistency and flavour clarity, the 1Zpresso J-Ultra is built for you. This is manual grinding reimagined – ultra-refined, beautifully tactile, and engineered for total control.

Designed for brewers who demand precision, the J-Ultra features external micro-click adjustment with 100 clicks per rotation and 8-micron grind steps. That means zero guesswork and dialled-in brews whether you're pouring over, plunging, or batch brewing your way through the day.

We love how the J-Ultra feels in hand – solid, smooth, and just the right amount of resistance. The hefty 48mm stainless steel burrs make light work of grinding, while the unibody aluminium design keeps things sleek and travel-ready.

This isn’t just about looks (though it scores plenty of those). It’s about reliability, repeatability, and the kind of grind quality that genuinely makes a difference in the cup.

Why we love the J-Ultra:

• External micro adjustment with 8-micron precision (100 clicks per rotation)

• 48mm stainless steel burrs for a consistent and efficient grind

• Ideal for pour-over, Aeropress, French Press, and batch brew

• Grind size memory ring to lock in your favourite setting

• Tool-free disassembly for effortless cleaning – no recalibration needed

• Durable, travel-ready design – no plastic parts where it counts

If you're ready to fine-tune your coffee ritual, the 1Zpresso J-Ultra delivers a hands-on experience that's as satisfying as the brew itself.

Hey, we get it, coffee equipment is not cheap! And paying the bills with coffee takes time. Use our payment options to ease up some cashflow!

​We now offer you the following options:

1) Settle immediately with either YOCO or PayFlex

2) Shop on credit with Mobicred (via Peach Payments)

3) Use now, pay later with Payflex (via Peach Payments)

4) Use now, rent until you own with Buna Rent-to-own

5) Apply for financing through Buna Coffee (refer to this link)