Best portable charger for Apple Watch Ultra 3.
Ultra 3 hits 42+ hours on a charge — until you turn on always-on display and GPS tracking.
Long days drain it.
Apple Watch Ultra 3 advertises 42+ hours, but GPS-tracked hikes, dive logging, and always-on display cut that hard. Backcountry trips need backup. The Clutch Pro powers the Apple-supplied USB-C watch puck.
USB-C + many top-ups.
USB-C puck-friendly
Apple Watch puck plugs into USB-C. The Clutch Pro supports it.
Dozens of top-ups
5,000 mAh tops up an Apple Watch many times — enough for a multi-day trek.
Phone too
Same bank covers your iPhone via MagSafe at the same time.
15 colors. Pick yours.
The matte finish hides fingerprints, scuffs, and whatever happens after a long day.
Backup for the Ultra.
Slim, magnetic, MagSafe-compatible, USB-C PD 20W. The Clutch Pro is the easiest charger to pair with a Apple Watch Ultra 3.
Shop the Clutch ProFrequently asked
Will the Clutch Pro charge a Apple Watch Ultra 3?
Yes. The Clutch Pro is USB-C in and out, supports up to 20W PD, and works with every Apple Watch Ultra 3 via the included cable.
How many full charges can I expect?
At 5,000 mAh (≈18.5 Wh), the Clutch Pro gives ≈1.0–1.2 full charges to most modern smartphones and a partial top-up to laptops or tablets.
Is it TSA-approved for the flight?
Yes. ≈18.5 Wh is well under TSA's 100 Wh carry-on limit and every airline's per-bank cap.
Reviewed by The Clutch Team · June 2026
Shop the Clutch Pro — $49.99