Senso ActivBuds S-250 Wireless Waterproof Earbuds Review

Written By Pete Anthony
  Last Updated On: 4-8-19  

The S-250 is an inexpensive and currently popular wireless pair of earbuds that’s actually full immersion IPX7 certified waterproof. They’re merely connected to eachother and there’s no 3.5mm jack, so these are only usable via Bluetooth.

out of the box

The packaging was nice – once the sealing plastic is removed, the hard box has a little ribbon to pull it out from the sleeve, revealing quite a lot of additional goodies inside.

Included with the headphones:

  • a hard carrying case
  • a micro usb charging cable
  • three different size/type replacement tips
  • an adhesive magnet thing, presumably to hang them from
  • an adhesive faux leather satchel thing
  • two wire ties/shorteners
  • manual, warning, support pamphlets

headphone front and back

The headphones are a bit big and bulky, but still manage to be reasonably light. Even after finding the best replacement tip for me, I wasn’t able to get a completely sealed and secure fit. The ear hooks are actually malleable though, so you can shape them to your ear. Maybe with a bit of effort I could have gotten a better fit. All in all they’re quite comfortable.

the on-board buttons

The controls are on the right headphone and are very basic – two tracking/volume buttons up top, and the “S” logo is also a pair/call/pause/play button. I actually like this set up because it feels easier than fishing for buttons on an in-line mic that’s dangling along the wire.

It was at this point I noticed these look suspiciously similar to the also popular wireless and waterproof MPOW Flame (reviewed here):

The Flame and S-250 side by side

With a now seemingly innumerable number of budget headphone manufacturers, it’s sometimes pretty clear when “different” products/companies are using the same design/manufacturer. Now, the inside drivers could certainly be different, but I wouldn’t be surprised if these were just the same headphones wearing different clothes.

Spec/Performance Discussion, Listening Impressions, Other Related Observations

Since these are only usable via Bluetooth they need to be charged first, which took mine about 1.5 hours. The advertised battery life is 8 hours which is comparatively OK.

My initial listening test further confirmed my suspicion that the S250s use the same hardware as MPOW Flames, because they sounded bad in the same way that that the Flames do: very bass heavy, but not in a good way. The bass was grainy and muddy and totally overpowered the mids and trebles which were significantly recessed. Like the Flames, it once again sounded like I was listening to speakers underwater or while squeezing a pillow against my ears. I kind of casually skipped through my testing playlist since I in effect already did this test with the Flames. The S250s might actually sound even worse than the Flames did.

These headphones do get very loud, very easily though, which could be useful for active/commuter or I guess underwater use. Various sales pages have advertised these as noise cancelling headphones but they are not, and rather have mere noise isolation, which I’d say is about a medium level of decent. CVC 6.0 certification helps somewhat with external noise filtration, but not completely.

Senso offers a one year warranty on its headphones, which is average coverage at this price-tier.

Overall Take, As Compared To The Competition

The Senso S-250 is a somewhat bulky but decently looking, fitting, and comfortable earbud that’s also waterproof, all for a relatively inexpensive price. They don’t sound great though. While they get very loud and have strong bass, the bass is grainy, muddy, and bleeds significantly into the mids/trebles which are significantly recessed, resulting in a generally muffled sound that lacks detail and crispness. In a niche that now has a lot of competition, there are similarly priced alternatives that sound much better, especially if you don’t need something that’s fully waterproof.

See the Senso S-250 ActivBuds on Amazon

See our current picks for the overall best budget earbuds