Black TK3 Pomodoro timer cube with digital display showing preset countdown minutes on a desk
Focus & Study

TK3 Pomodoro Timer Cube, Desk Productivity Timer with 5/10/30/60 Min Presets, Custom Countdown, Stopwatch, Clock, 3 Alarm, Silent, Vibrate & Sound Alert, for Task, ADHD, Study, Kitchen, Black

A cube timer with presets plus custom durations, a stopwatch, a clock, and a silent vibrate alert.

Available at:
Amazon
Market:
United States (Amazon.com)
Availability:
Availability and price change frequently on Amazon. Check the listing for current stock and shipping to your country.

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What it is

This is the flexible version of the flip cube. It keeps the same turn-it-over start but adds custom countdowns for people whose sessions are not 25 minutes, a stopwatch for timed tasks, and a vibrate-only mode for libraries, shared offices, and classrooms where an audible alert is disruptive. It also displays the time, so it can replace a phone that was sitting on the desk purely as a clock.

Why HOS selected it

It covers the desk clock, the stopwatch, and the focus timer in one object, removing three reasons the phone stays out.

Key features

  • Presets plus fully custom countdown durations
  • Silent vibrate alert alongside sound
  • Stopwatch and clock modes

Who it is for

Shared study spaces, offices, and anyone whose focus blocks vary in length.

What it will not do

More modes mean more buttons, so it is slightly less immediate than a fixed-preset cube.

Buying considerations

  • Decide whether you need custom durations or fixed presets
  • Check the vibrate strength on a soft desk surface
  • Note the charging or battery requirement

Editorial note

HOS selected this product based on its stated features, practical relevance, availability, and fit with this category. This is not a hands-on review unless explicitly labeled as one.

Product details verified 2026-08-04.

Affiliate link. HOS may earn a commission at no extra cost to you.

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