The same visual dial, small enough to travel with.
The Time Timer's fully-adjustable visual dial, shrunk to a portable size — needs a battery and a smaller face than the Original, but travels with you.
According to manufacturer specifications, the MOD uses the same shrinking-red-disk mechanism as the Time Timer Original — turn the dial to set any duration up to 60 minutes, and a visible disk disappears at the same rate. The MOD runs on a single AA battery, operates silently by default, and has an optional audible alert at zero.
At roughly 3.6 x 3.6 x 2 inches, the MOD is built to travel — a desk, a bag, or a different room each day — in a way the 12-inch Original isn't. An optional silicone case (sold separately) adds drop protection. The tradeoff is legibility: the smaller face is harder to read at a glance from across a room than the Original's larger disk.
The MOD suits anyone who wants the Time Timer's fully-adjustable visual dial but needs it to move between rooms, into a bag, or onto a smaller desk — without giving up the ability to set any duration rather than choosing from fixed presets.
Anyone who wants the timer visible across a shared room — a classroom, a shared office — should buy the larger 12-inch Time Timer Original instead; its bigger face is built for exactly that. Anyone who wants zero batteries to manage should also look at the Original, though note it also requires batteries despite its analog look.
A genuinely portable version of the Time Timer's core mechanism — same fully-adjustable dial, smaller body, one AA battery. The right pick for anyone who needs the timer to travel with them rather than stay fixed to one desk.
Both use the identical shrinking-disk mechanism and are fully adjustable to any duration up to 60 minutes — the difference is purely size and portability. The Original's 12-inch face is built to be seen across a room; the MOD's 3.6-inch body is built to travel in a bag or move between desks. Choose the Original for a fixed, shared space; choose the MOD if the timer needs to go where you go.
The same disappearing-disk dial as the Original, shrunk to desk- or bag-sized — at the cost of needing a battery and a smaller display.
Yes — it requires 1 AA battery (not included), the same as the Time Timer Original, according to manufacturer specifications.
No. The removable silicone case is sold separately as a case value pack, not bundled with the base MOD.
Same mechanism — an adjustable dial and a visibly shrinking disk — in a smaller, more portable body (3.6 inches vs. the Original's 12 inches). The tradeoff is a smaller, harder-to-read-at-distance face.