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A waterproof case for the HTC One M9 is now a specialist purchase. The purpose-built HTC Active Pro Case is the only custom-fit case here with a stated immersion rating. The other waterproof choices are universal pouches that explicitly list M9 compatibility or provide dimensions that accommodate it. The final section is clearly labelled rugged near-misses: these protect against bumps or splashes, but have no published submersion rating.
| # | Product | Price | Where to buy |
|---|---|---|---|
| 1 | HTC Active Pro Case for HTC One M9 | $20 to $70 | Amazon · eBay |
| 2 | Mpow PA024A Waterproof Phone Pouch | $8 to $20 | Amazon |
| 3 | Mpow PA096A Waterproof Armband Phone Pouch | $10 to $25 | Amazon |
| 4 | Aquapac Floating Phone Case Plus | $25 to $35 | Amazon · eBay |
| 5 | Aquapac Impact Max Floating Phone Case | $35 to $45 | Amazon |
| 6 | Aquapac TrailProof Phone Case | $15 to $25 | Amazon |
| 7 | OtterBox Defender Series for HTC One M9 | $20 to $50 | Amazon · eBay |
| 8 | Spigen Slim Armor for HTC One M9 | $10 to $30 | Amazon · eBay |
| 9 | Spigen Neo Hybrid for HTC One M9 | $10 to $25 | Amazon |
The picks, in detail
HTC Active Pro Case for HTC One M9
The purpose-built HTC Active Pro Case is rated IPX8 and IP6X by HTC; contemporary product reporting states a two-metre, one-hour water claim.
- HTC One M9-specific
- IPX8 water rating
- IP6X dust rating
- Custom-fit M9 waterproof case
- Embedded screen protector
- Legacy accessory availability is limited
- Inspect seals before every water use
Mpow PA024A Waterproof Phone Pouch
A universal IPX8 dry-bag pouch whose compatibility list specifically includes HTC One M9 and devices under 6.5 inches.
- HTC One M9 listed
- IPX8 pouch
- Clear front and back
- Explicit M9 compatibility
- Includes a sealed pouch format
- Not a form-fitting hard case
- Touch response can be affected by water pressure
Mpow PA096A Waterproof Armband Phone Pouch
An IPX8 universal pouch with an armband whose stated compatibility list includes HTC One M9 and devices up to 6.5 inches.
- HTC One M9 listed
- IPX8 pouch
- Detachable armband
- Hands-free water-sports carry
- Clear touchscreen window
- Universal pouch rather than a fitted shell
- Check the phone fits without a bulky case
Aquapac Floating Phone Case Plus
A current universal Aquapac phone case with an IPX8 rating and a published 10m or 30ft submersion limit; measure the bare M9 against its 163mm maximum height.
- IPX8 rating
- 10m or 30ft stated limit
- Floating design
- Current maker support
- Published dimensional limit
- Universal pouch, not M9-specific
- Measure the phone before ordering
Aquapac Impact Max Floating Phone Case
A larger Aquapac universal phone case rated IPX8 to 10m or 30ft, with foam impact protection and a 175mm maximum phone height.
- IPX8 rating
- 10m or 30ft stated limit
- Foam impact protection
- Extra room for a compact phone
- Floats
- Universal pouch rather than a fitted shell
- Measure the M9 and any bumper first
Aquapac TrailProof Phone Case
A current universal near-submersion option rated IPX6 for splash protection rather than an IPX8 immersion case; its published maximum height is 163mm.
- IPX6 splash rating
- 163mm maximum height
- Ziplock-style closure
- Clearly lower-rated alternative
- Current maker sizing guidance
- Not submersible
- Measure the M9 before ordering
OtterBox Defender Series for HTC One M9
Rugged near-miss: OtterBox describes the M9 Defender with a polycarbonate shell, shock-absorbing slipcover and a built-in display membrane, but does not publish a water-immersion rating.
- HTC One M9-specific
- Polycarbonate shell
- Display membrane
- Rugged three-layer design
- Includes holster-style belt clip
- No published waterproof rating
- Legacy stock may be limited
Spigen Slim Armor for HTC One M9
Rugged near-miss: a custom-fit M9 case with a webbed TPU core, polycarbonate exterior and built-in kickstand; it has no published waterproof or IP rating.
- HTC One M9-specific
- TPU core
- Polycarbonate shell
- Shock-focused layered construction
- Kickstand included
- No published water rating
- Do not use for immersion
Spigen Neo Hybrid for HTC One M9
Rugged near-miss: the M9 Neo Hybrid combines a shock-absorbing TPU case, polycarbonate bumper and 1.2mm raised screen lip, with no published waterproof claim.
- HTC One M9-specific
- TPU and polycarbonate
- 1.2mm raised lip
- Reinforced bumper design
- Buttons and ports remain accessible
- No published water rating
- Not a substitute for a dry bag
Buying tips
- For any waterproof pouch, inspect the seal, close it correctly and test it empty with tissue paper before trusting it with the phone. A stated IP rating applies only when the closure is intact and used as directed.
- Do not confuse the HTC One M9 with the M8, M9+ or A9. Rugged cases without a published IP or depth rating are near-misses, not waterproof cases.
As an Amazon Associate and eBay Partner, toptenpick.com earns from qualifying purchases. Prices and availability are subject to change.