How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-27 · 8 min read · Independent comparison
• KLIM Nomad Transparent — biggest strength: it is a portable CD player, FM radio, TF-card player and Bluetooth transmitter in one unit, with anti-skip protection that preloads 100 seconds of music, a rechargeable battery, and a second audio port so two people can listen at once.
• KLIM Nomad Transparent — biggest trade-off: it is a disc-based device, not a wearable. It plays MP3 discs and audio CDs, so it is not something you strap on for a swim, and Bluetooth pairing with some car infotainment systems can be finicky.
• Feiltik Swimming Headphones Underwater — biggest strength: fully IPX8 waterproof bone-conduction headphones with 32 GB of built-in MP3 storage (roughly 8,000 songs) and Bluetooth 6.0 with dual-device pairing for use on land.
• Feiltik Swimming Headphones Underwater — biggest trade-off: Bluetooth does not work underwater, so you must switch to MP3 mode before getting in the water, and there is no active noise control of any kind.
• Who each pick is for: the KLIM Nomad Transparent suits someone who wants physical discs, radio and a car-friendly player with real open, unsealed earbuds; the Feiltik suits a swimmer who wants music in the pool without a phone anywhere nearby.
The KLIM Nomad Transparent is best understood as a modern take on the portable CD player — a Walkman-style deck that also happens to be a radio and a Bluetooth source. Its headline feature is lossless CD audio, which is the whole point: if you still own CDs and you want that sound rather than a compressed stream, this is the device that plays them. Around that core it stacks connectivity: Bluetooth output to a speaker or Bluetooth headphones, an AUX cable for a car stereo, a TF card reader that accepts cards up to 32 GB, and FM radio. There is also a rechargeable battery, so you are not hunting for disposables.
The open-ear angle is what makes it interesting next to bone-conduction gear. KLIM includes its Fusion wired earbuds and gives you a double audio port, so two people can plug in and listen at the same time. There is a genuinely useful trick here: put the included earphones into Audio Port 2 and the cable acts as an antenna, which the brand says meaningfully improves FM reception. That is the kind of detail you only get from a device designed by people who actually use radio.
Who should buy it? Someone who splits their listening between a car, a desk and a kitchen counter, wants CD quality as an option, and likes the idea of two people sharing one player. It is also a strong pick if you have a stack of MP3-burned discs or a TF card full of files and no interest in streaming. Commuters and people doing sports get the anti-shock chip, which preloads 100 seconds of audio to prevent skips and protects both the disc and the mechanism.
Feiltik Swimming Headphones Underwater: Who It's For
The Feiltik Swimming Headphones Underwater are a single-purpose tool done properly: they are built to put music in your ears while you are in the pool. IPX8 is the key number. That is full waterproofing intended for swimming, diving and snorkeling, and it is why the charging is magnetic — no rubber flap over a USB port means one less seal to fail and a more durable, fully sealed body.
The second pillar is the 32 GB of built-in memory. That is a full MP3 player inside the headphones, quoted at up to around 8,000 songs. This matters because of the third pillar, which is the honest limitation in the spec sheet: Bluetooth does not work underwater. Water blocks the signal, so the only way to hear anything while submerged is MP3 mode. You load your music beforehand, switch modes, and swim. On dry land the same pair works as normal Bluetooth 6.0 headphones with dual-device pairing, so you can be connected to two devices at once — a phone and a laptop, say.
The fit is the other half of the story. These are bone-conduction, open-ear headphones: the driver sits outside your ear canal and transmits through bone, so your ears stay unblocked. No ear pressure, no soreness after long sessions, and you can still hear a coach, a lane-mate or a whistle. The brand includes swimming earplugs and a protective case, which tells you they expect this to be a pool-bag item.
Who should buy it? Swimmers, first and foremost — lap swimmers, open-water swimmers, snorkelers, anyone who wants audio without a phone on the pool deck. Also good for people who hate things jammed in their ears during long sessions, and for anyone who wants a standalone music player without carrying a second device.
Side-by-Side: Which Should You Choose?
• Best for swimming and water sports → Feiltik Swimming Headphones Underwater. IPX8 waterproofing plus 32 GB of onboard music is the whole reason it exists.
• Best for CD and lossless audio → KLIM Nomad Transparent. It is a CD player first, and it plays audio CDs and MP3 discs.
• Best for radio → KLIM Nomad Transparent. Built-in FM, plus the earphone-as-antenna trick through Audio Port 2.
• Best for phone-free listening → Feiltik Swimming Headphones Underwater. No pairing, no signal, no phone needed in MP3 mode.
• Best for sharing with a second person → KLIM Nomad Transparent. The double audio port lets two sets of wired earphones run at once.
• Best for all-day comfort on the ears → Feiltik Swimming Headphones Underwater. Open-ear bone conduction avoids ear-canal pressure entirely.
• Best for car use → KLIM Nomad Transparent. AUX cable or Bluetooth to the car system, and it is explicitly marketed for in-car CD playback.
• Best for dual-device wireless switching → Feiltik Swimming Headphones Underwater. Bluetooth 6.0 with two devices paired simultaneously.
• Best for stability on the move → KLIM Nomad Transparent. The anti-shock chip preloads 100 seconds of audio to stop skips during commutes and sport.
In my opinion, these two barely overlap, so the decision comes down to where you listen. If your music life happens in a car, at a desk, or around a stack of CDs you refuse to give up, I would buy the KLIM Nomad Transparent — it plays the discs, pulls in FM, feeds a car stereo and lets two people listen at once, which no pair of swimming headphones can do. I would only pick the Feiltik Swimming Headphones Underwater if the water is the point: IPX8 sealing and 32 GB of built-in storage are exactly what a swimmer needs, and nothing about the KLIM replaces that. Buy for the environment, not the feature list. Check the current price on Amazon before you commit, since both sit in very different budget brackets.
Transparency mode is a feature of active noise-cancelling headphones that pipes outside sound in through microphones. Neither product here lists that feature: the KLIM Nomad Transparent's "transparent" name refers to its clear plastic body, and the Feiltik lists noise control as none. The Feiltik does give you an open, unblocked listening feel, but through bone conduction rather than electronics.
No — transparency mode depends on the model and the firmware, and it is tied to active noise cancellation hardware. That is a separate product category from both items compared here, so if toggling ambient sound on and off is your priority, look specifically at ANC earbuds rather than a CD player or bone-conduction swim headphones.
Transparency mode appears on the noise-cancelling models in the AirPods line, not on the base models without ANC. I mention it only to draw the line clearly: the KLIM Nomad Transparent and the Feiltik Swimming Headphones Underwater are designed around different jobs — disc playback and underwater playback — and neither is an ANC earbud.
Usually by pressing and holding the stem or using the control centre on a paired device, depending on the model. That is not something you would do with either product here. On the Feiltik you switch between Bluetooth and MP3 mode, and on the KLIM you choose your source — CD, TF card, FM or Bluetooth.
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.
See also: Joythink Weighted Eye Masks vs AONESY Headband Headphones, Altec Lansing Nanophones ANC 2.0 vs BEVCEFCC Open Ear Headphones, vinamass Kids vs LORELEI Q60: Wireless Travel Headphones, Rulefiss Earbuds vs KVIDIO Headphones