How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want the longest battery life and a voice-controlled, sweat-proof pair for workouts, choose Skullcandy S2RLW-Q786; if you need the newest Bluetooth, a flush semi in-ear fit for commuting and sleeping, and a case that clips to your keys, choose Belkin SoundForm Anywhere Ultra-Compact. Both handle multipoint pairing, so the split really comes down to how you wear earbuds and how you want to control them.
• Skullcandy S2RLW-Q786 — biggest strength: 34 hours of total battery life (10 in the buds, 24 in the case) with multipoint pairing, Skull-iQ voice control and Tile finding built in.
• Skullcandy S2RLW-Q786 — biggest trade-off: No noise cancellation, an in-ear bud design that relies on ear tips, and only Bluetooth 5 on the sheet.
• Belkin SoundForm Anywhere Ultra-Compact — biggest strength: Bluetooth 5.4, multipoint for two devices, Environmental Noise Cancellation and a semi in-ear fit that skips ear-tip pressure entirely.
• Belkin SoundForm Anywhere Ultra-Compact — biggest trade-off: 26 total hours instead of 34, and a semi in-ear seal that won't isolate as much as a tipped design.
• Who each pick is for: Skullcandy for all-day listeners, gym-goers and anyone who wants voice control and earbud tracking; Belkin for commuters, sleepers, travelers and people who hate the plugged-ear feeling.
The Rail XT is built around endurance and hands-free convenience. You get 34 hours of total playtime — 10 in the earbuds and 24 more in the charging case — and a 10-minute Rapid Charge that adds roughly 2 hours of listening. It's rated IP55, so sweat and water resistance is part of the design, and the multipoint pairing lets it hold two devices at once with seamless transitions. In practice that means laptop calls and phone audio without re-pairing every time.
What sets it apart is the Skull-iQ App. You can control media, the Spotify app and other functions with your voice, adjust EQ, check battery life, and tune the sound to your own hearing with Personal Sound. It also includes Tile finding technology, so if you misplace a bud you can locate it through the Tile app. The driver is a dynamic driver covering 20 Hz to 20,000 Hz, tuned for deep bass and a wide dynamic range.
Who should buy it: people who wear earbuds for hours, train hard enough to sweat, and like the idea of talking to their earbuds instead of tapping them. Who should skip it: anyone who wants active noise cancellation (the sheet lists noise control as none) or who dislikes the sealed feeling of in-ear tips.
Belkin's take is about fit and portability. The semi in-ear shape sits flush and avoids the pressure buildup that ear tips create, which makes it comfortable for commutes, workouts and even sleeping. You get 6 hours per earbud plus 20 in the case for 26 total hours, and 10 minutes of USB-C fast charging returns about 90 minutes of playtime. Bluetooth 5.4 is the headline connectivity spec here, and multipoint holds two devices so you can jump from a laptop call to music on your phone.
On calls, Environmental Noise Cancellation and Clear Call Quality technology work to keep your voice clean and background noise down. There are three EQ presets — Belkin Signature Sound, Bass Boost and Balanced — selectable through touch controls. The buds and case are drop- and spill-tested with IPX4 water resistance, the case has a key ring for clipping to a bag, and a Size-Up Sleeve slides over each earbud if you want a larger, more secure fit. They're made with post-consumer recycled materials and ship in plastic-free packaging, with 2-year manufacturer coverage.
Who should buy it: travelers, commuters, light sleepers and anyone who finds tipped earbuds uncomfortable. Who should skip it: people who need maximum battery life or the deepest possible noise isolation.
Side-by-Side: Which Should You Choose?
• Best for the newest Bluetooth → Belkin SoundForm Anywhere Ultra-Compact. Bluetooth 5.4 on the spec sheet against Bluetooth 5.
• Best for comfort during sleep or long commutes → Belkin SoundForm Anywhere Ultra-Compact. The semi in-ear, flush design avoids ear-tip pressure.
• Best for workouts and heavy sweat → Skullcandy S2RLW-Q786. IP55 beats IPX4 on water and dust resistance.
• Best for hands-free control → Skullcandy S2RLW-Q786. Voice control through the Skull-iQ App plus Tile finding for lost buds.
• Best for calls in noisy places → Belkin SoundForm Anywhere Ultra-Compact. Environmental Noise Cancellation and Clear Call Quality are the focus.
• Best for travel and portability → Belkin SoundForm Anywhere Ultra-Compact. The key ring case and Size-Up Sleeve make it easy to carry and adjust.
• Best for sound personalization → Skullcandy S2RLW-Q786. Personal Sound tuning and EQ adjustments in the app.
In my opinion, the Skullcandy S2RLW-Q786 is the better buy for most people, because 34 hours of total battery, IP55 durability, voice control and Tile finding cover more situations than any single Belkin feature. That said, I'd steer you to the Belkin SoundForm Anywhere Ultra-Compact if you commute, sleep in earbuds, or simply can't stand the feeling of ear tips — its semi in-ear fit and Bluetooth 5.4 are genuinely the stronger choice for those habits. Multipoint works well on both; pick based on fit and battery, not the pairing feature. Check the current price on Amazon before deciding, since that can shift the math.
Pair each set to your phone or laptop one at a time through your device's Bluetooth menu, then switch between them in that menu. With multipoint, the Skullcandy S2RLW-Q786 and Belkin SoundForm Anywhere Ultra-Compact each hold two devices at once and switch automatically.
On iPhone, open Settings, then Bluetooth, and connect each pair in turn. Both earbuds here support multipoint, so once paired you can move between an iPhone and a second device like a laptop without re-pairing.
Go to Settings, then Bluetooth on the iPad and select the earbuds you want. The Belkin model pairs easily with an iPad per its Bluetooth 5.4 spec, and the Skullcandy handles the same job over Bluetooth 5.
You can't run two sets of earbuds on one audio stream at the same time, but you can keep several paired and switch between them. Multipoint on both of these lets each set stay connected to two devices, which is the realistic version of "multiple headphones" for most people.
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