Sennheiser MOMENTUM True Wireless 5 vs Technics EAH-AZ100

What you'll actually notice

Both are neutral-platform sealed ANC earbuds with multipoint and wireless charging, but they optimise different parts of ownership.

Sennheiser MOMENTUM True Wireless 5 is 7g per earbud with a 55g case, rated for 6 hours ANC-on / 12 hours ANC-off and 40 hours total, and adds a user-replaceable battery plus IP54 earbuds.

Technics EAH-AZ100 is lighter at 5.9g per earbud with a 42g case, runs for 10 hours ANC-on / 12 hours ANC-off, and supports three-device multipoint.

So the useful choice is serviceability and total reserve versus lighter hardware, longer uninterrupted ANC sessions and deeper multi-device switching.

What changes the choice

Do you care about battery replacement years from now?

Sennheiser explicitly supports a user-replaceable battery.

Technics' current exact record does not establish an equivalent serviceability path.

What this means: Sennheiser gives long-term owners a clearer route when battery ageing eventually becomes the problem.

Switch when: choose Sennheiser if you keep premium earbuds for many years and serviceability matters. If your upgrade cycle is shorter, reduce the value of this feature.

How long do you need one ANC session to last?

Sennheiser is rated for 6 hours with ANC on.

Technics is rated for 10 hours with ANC on.

Both are rated for 12 hours ANC-off.

What this means: Technics has a clear four-hour advantage when ANC stays engaged continuously.

Switch when: choose Technics for long flights, work blocks or listening sessions where returning to the case is inconvenient. Choose Sennheiser if six hours is enough and its ownership advantages matter more.

Do you actually rotate among three devices?

Technics supports multipoint with three devices.

Sennheiser supports multipoint, but the current exact record does not state the same three-device count.

What this means: Technics has the more explicit complex-device workflow for a phone, laptop and tablet or second computer.

Switch when: choose Technics if three-device rotation is a repeated part of your day. If you only use one or two devices, that advantage shrinks quickly.

Which durability boundary is more useful?

Sennheiser is rated IP54 earbuds.

Technics is rated IPX4 earbuds.

What this means: Sennheiser's rating includes dust protection as well as splash resistance.

Switch when: choose Sennheiser if that stronger everyday exposure boundary matters. Neither rating proves secure sport fit.

Does physical weight change the ownership story?

Sennheiser is 7g per earbud / 55g case.

Technics is 5.9g per earbud / 42g case.

What this means: Technics is lighter both on-ear and in the pocket.

That still does not prove comfort, but it is a real physical difference.

Switch when: choose Technics if lower carry and ear weight matter. Choose Sennheiser if you accept the extra mass for serviceability and total-battery ownership.

The case totals also describe different ownership styles. Sennheiser's 40-hour total is useful for buyers who want a large reserve across several days, while Technics' 28-hour ANC-on case-inclusive figure is lower but paired with much longer 10-hour individual sessions. One favours total reserve and serviceability; the other favours fewer interruptions during each session.

Charging behaviour is similarly secondary but real. Sennheiser is rated at 8 minutes for 1 hour and Technics at 15 minutes for around 90 minutes. Neither quick-charge figure should outweigh the larger serviceability versus three-device/battery split, but it helps show that both have viable recovery paths rather than one being clearly inconvenient.

The practical choice

Choose Sennheiser MOMENTUM True Wireless 5 when you want an ownership-focused premium earbud with a replaceable battery, IP54 protection and a 40-hour total battery story.

Choose Technics EAH-AZ100 when you value 10-hour ANC sessions, three-device multipoint and lighter hardware more than Sennheiser's serviceability.

Both qualify as premium sealed ANC earbuds. The current evidence does not support a universal sound, microphone or ANC-performance winner.

The key is to decide whether you are optimising for how long the product can stay useful over years or how long each listening session can run before the case. Sennheiser's replaceable battery speaks to the first problem; Technics' 10-hour ANC figure speaks to the second. A buyer who changes earbuds every few years may never realise Sennheiser's serviceability advantage, while a long-haul traveller may notice Technics' session advantage immediately. That time horizon is more useful than a generic “premium” label.

When to choose Sennheiser MOMENTUM True Wireless 5

• Replaceable-battery ownership matters.
• IP54 protection is useful.
• Forty-hour total battery reserve matters.
• Six-hour ANC sessions are sufficient.

When to choose Technics EAH-AZ100

• Ten-hour ANC sessions matter.
• Three-device multipoint is useful.
• Lower earbud and case weight matters.
• IPX4 is sufficient for your use.

Choose neither when

Choose neither if you need a sport-secure attachment, open-ear awareness or an ecosystem-specific Apple/Galaxy workflow.

PIQSY conclusion

Choose Sennheiser when replaceable-battery ownership, IP54 earbuds and 40-hour total battery matter; choose Technics when 10-hour ANC sessions, three-device multipoint and lower earbud/case weight matter more.

This is a long-term ownership versus daily-session workflow decision, not an acoustic ranking.