C01 Watch Band

A titanium watch band built for those who favor refined engineering over trends. The Aulumu C01 is a Hi-Per titanium alloy band for Apple Watch Ultra and Series models that nails the balance of strength, lightness, and precision. It’s 43% lighter than steel and uses a slim magnetic clasp with N52 magnets and a secure lock, so one-handed on and off feels clean and reliable.

Design-wise, the asymmetrical loop and CNC precision machining give it crisp lines without trying too hard. The diamond-like carbon coating adds scratch resistance across every component, keeping that premium finish intact. It fits wrists 145 to 225 mm, and while adjustments are possible, the brand recommends a pro to avoid damage to the left-right ring structure.

This band complements the Apple Watch Ultra 3, Ultra 2, and Ultra 1 (49 mm), plus Apple Watch Series 11/10/9/8/7 and SE in 46/45/44 mm. If you want a durable titanium Apple Watch band that feels considered, this is it.