OtterBox built the Defender Series Pro XT for the part of the Duo that ordinary phone cases don't have: a moving spine. Its hinge cover articulates with the device and lies flat when the phone opens. The raised grip area along that hinge may also make the open phone easier to hold, though that needs hands-on use to judge.
Port covers block dust and dirt from the openings. Grippy edges cover the sides. A polycarbonate plus elastomer shell wraps the body. Built-in magnets allow wireless charging and magnetic accessory attachment without removing the case. OtterBox lists the case at 74.38 grams, before the weight of the phone.
Key specs
| Weight | 74.38 g |
|---|---|
| Hinge | articulated cover |
| Ports | covered |
| Drop claim | 4X military standard test |
OtterBox calls it 4X tested to military drop standard 810G-516.6. The figure is the company's stated test multiple. It gives a basis for comparing this case with the lighter Lumen, which OtterBox rates at one cycle, though neither number guarantees a particular drop outcome.
The profile measures 14.69 mm at its stated thickest dimension. Compared with OtterBox's Lumen, the Defender gives up some of the clean look to cover the fold and protect the ports. Those port covers are a practical distinction even before comparing drop ratings. This is the case for a phone carried around tools, sand, or a crowded commute.
Defender Pro XT makes sense when the covered hinge and ports are worth the added weight. Lumen is 16.12 grams lighter and leaves both areas more open.
