We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-29 · 6 min read · Independent comparison
If you want one pair of headphones that can actually go in the water with you, choose SilisoundTek Bone Conduction Swimming; if you need a sleep companion that plays sound without anything touching your ears, choose Hesond Pillow Speaker Bone.
• SilisoundTek Bone Conduction Swimming — biggest strength: a genuine IP68 waterproof build plus 32GB of built-in storage, so it keeps playing music underwater without any Bluetooth signal. Biggest trade-off: it's still a wearable you put on your head, and Bluetooth won't reach you once you're submerged.
• Hesond Pillow Speaker Bone — biggest strength: you never wear it at all. It sits under your pillow, runs up to 20 hours, and has a 30/60-minute auto-off timer built for falling asleep. Biggest trade-off: it is explicitly not water resistant, so sweat, rain and pools are off the table.
• One is a swim-and-sport device; the other is a bedside sleep device. They barely overlap in real use.
• Pick SilisoundTek if your priority is training in water, open-ear running, or carrying your own music library offline.
• Pick Hesond if your priority is falling asleep to white noise or music without ear fatigue, and you share a bed or a room.
This is a purpose-built aquatic headphone. The headline spec is IP68 — the highest waterproof level in the sheet — and the brand positions it for swimming, surfing and diving as well as running, skiing, hiking and skating. That range matters: it's not a "splash resistant" earbud that survives a jog in the rain. It's designed to be submerged and keep working.
The clever part is the 32GB TF card. Bone conduction runs on vibration, and Bluetooth simply doesn't transmit reliably through water, so the design gives you an offline MP3 mode you switch to once you're in the pool. The sheet says 32GB holds more than 8,000 songs, which is far more than anyone needs for a swim session — think of it as a music player with headphones fused into one unit. Bluetooth 5.4 is there for dry-land use, pairing with phones, tablets and smart watches, with a listed range of 10 to 13 meters depending on where you read it.
Who should buy it: lap swimmers, open-water swimmers, triathletes, and anyone who wants one headphone for both the pool and the running trail. Who should skip it: side sleepers, people who want to lie in bed listening without wearing anything, and anyone who needs water resistance and a speaker rather than a wearable.
Hesond Pillow Speaker Bone: Who It's For
The Hesond flips the whole idea. There's nothing on your ears at all — you slide this flat 6.1-inch bar under your pillow and it vibrates sound up through the pillow using a bone conduction driver. The sheet's own framing is ear comfort: no pressure points, no sore ears after hours of use, because you're not wearing anything.
It's clearly aimed at sleep. The feature list mentions white noise, music, naps and night sleep, and the controls support that: double-tap plus for a 60-minute auto shut-off, double-tap minus for 30 minutes. That's the detail I like most — you can drift off without the thing playing all night. Battery is a 400mAh cell rated for up to 20 hours of continuous play and up to 12 days standby, and it charges over USB.
Connectivity is Bluetooth 5.3 with a 10-meter range and automatic reconnection to your phone on later uses, and it's compatible with iOS, Android and Windows. There's also a Micro SD card slot accepting 2GB–64GB cards, which is handy if you'd rather not leave a phone paired overnight — but note the card is not included. It weighs 60g, the shell is polycarbonate, and the controls are touch-based. One important limitation: the sheet lists it as not water resistant, and the warranty is one year.
Who should buy it: side sleepers, light sleepers, couples where one person wants audio and the other wants quiet, and anyone who gets ear pain from earbuds. Who should skip it: swimmers, gym-goers, runners — anyone who needs this to survive moisture or movement.
Side-by-Side: Which Should You Choose?
• Best for sleep and side sleepers → Hesond Pillow Speaker Bone. Nothing touches your ears, and the 30/60-minute timers exist for exactly this.
• Best for battery life → Hesond, at up to 20 hours continuous versus SilisoundTek's 8–10 hours.
• Best for offline music without a card → SilisoundTek, since 32GB is already built in; the Hesond needs you to supply a Micro SD card.
• Best for shared bedrooms → Hesond. It's designed to keep sound local so it doesn't disturb the person next to you.
• Best for wet, sweaty or outdoor training → SilisoundTek. The Hesond is not water resistant at all.
• Best for controls you can find by feel → SilisoundTek. Physical buttons beat a touch panel when your hands are wet or you're half asleep.
• Best for warranty confidence → SilisoundTek, with 24 months against Hesond's one year.
• Best for a single-purpose gift → Hesond, if the person is a bad sleeper; SilisoundTek if they swim.
If I had to pick one for myself, I'd take the SilisoundTek Bone Conduction Swimming headphones. In my opinion they cover more of real life — pool, run, commute — and the IP68 rating plus 32GB of onboard storage solve a problem no ordinary earbud can. The Hesond is genuinely good at one job, and if that job is your job — falling asleep without ear pain — it's the smarter buy. But as a single purchase that earns its place more days of the week, I'd go with SilisoundTek. Either way, check the current price on Amazon before you commit, since both sit in very different budget brackets.
Yes, based on the specs. IP68 is the top waterproof rating, and the built-in 32GB TF card lets you play music underwater where Bluetooth can't reach. Switch to MP3 mode before you get in.
No. The data sheet lists it as not water resistant, and it's designed for a bedside tabletop or under a pillow. Keep it dry.
Yes, if you supply your own Micro SD card — the slot accepts 2GB to 64GB, but the card is not included. Otherwise it pairs over Bluetooth 5.3.
The Hesond, at up to 20 hours of continuous play on its 400mAh battery, versus 8–10 hours for the SilisoundTek. The Hesond also has a longer standby figure and auto-off timers.
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