Touch buds on Bluetooth 5.3 in a 2,000mAh case that doubles as a phone rescue. The IPX3 buds shrug off gym sweat and a drizzle, not a downpour.
The Volt Plus Tech F9 V5.3 Pro wears a Samsung Galaxy S10 name on the box. That is a compatibility tag, not a lock. The buds speak standard Bluetooth 5.3, so an iPhone, a Pixel, a Windows PC or an iPad pairs just as easily.
The same pair ships under a long run of phone names. Pick the one that matches your phone if it helps; the hardware inside stays the same whatever the label says.
Here is what rides in your pocket:
The Pro in the name is about the case, not exotic drivers. Each bud runs a dynamic driver at 25.94 ohm with 103 dB sensitivity, normal numbers for an F9. A phone drives them loud long before the slider runs out.
How the chips and ranges line up across every version is spelled out in the F9 specs breakdown.
| Spec | Value |
|---|---|
| Model | F9 V5.3 Pro (maker code MD06) |
| Bluetooth | 5.3 |
| Stated range | 33 ft (about 10m) |
| Bluetooth name | F9 |
| Case battery | 2,000mAh power bank |
| Playtime per charge | 5+ hours |
| Total with case | About 25 hours (maker figure) |
| Case recharge time | About 2 hours |
| Charging port | USB-C |
| Battery display | LED readout on the case |
| Controls | Touch: tracks, volume, voice assistant |
| Call noise reduction | CVC 8.0, up to 25 dB (maker figure) |
| Driver | Dynamic |
| Impedance | 25.94 ohm |
| Sensitivity | 103 dB |
| Water resistance | IPX3 nano-coating on the buds; case not water-resistant |
| Case size | 2.7 × 1.3 × 1.2 in |
| Case weight | 2.1 oz |
| In the box | Two buds, charging case, ear tips (S, L), USB cable, manual |
| Colour | Black |
IPX3 is the lightest splash rating in the F9 family. It covers water sprayed at an angle, the kind a light drizzle throws at your ears. The buds get a nano-coating that keeps sweat away from the electronics.
The case gets no rating at all. The maker says it plainly: the charging box is not waterproof. Keep it in a zipped pocket or the gym bag, never in a wet palm.
| Situation | V5.3 Pro verdict |
|---|---|
| Treadmill or spin class, heavy sweat | Fine: towel the buds off afterwards |
| Walk to the station in a light drizzle | Fine |
| Steady rain on a long run | Pick an IPX7 pair |
| Rinse under the tap after the gym | No |
| Pool, shower, open water | No |
Sweat is salty. Salt on the charging pins quietly kills cheap buds, so a thirty-second habit after every session keeps this pair going:
Tips matter for sweat too. Two sizes ship in the box, small and large. A tip that seals well stays put through lunges and keeps sweat from running into the nozzle. A loose one lets the bud rock with every stride, and the touch panel starts picking up stray taps.
Out in the rain every week? The Volt Plus Tech F9 with the 2,000mAh case keeps the phone-charging idea and moves the buds up to IPX7. Same maker, same LED readout, wetter weather.
Both buds stream for five hours and more per charge. The case adds about 20 more, for about 25 hours in the maker's total. That figure counts bud playtime only; anything you hand to a phone comes out of the same pool.
The phone trick is simple. Plug your phone's own cable into the case and it hands over power. A 2,000mAh cell is small next to a phone battery, so treat it as a rescue, not a full refill.
Refilling the case takes about 2 hours over USB-C. The LED digits climb as it fills, so a glance tells you when it can leave the desk.
After that, the buds rejoin the last phone the instant they leave the cradle. Either bud also works alone, so one can sit in the case charging while the other covers a call.
The full sequence for iPhone, Android and laptops sits in how to pair F9 earbuds. Case habits that stretch the battery are in the F9 charging guide.
Volt Plus Tech makes two Pro pairs. The V5.3 Pro is the plainer one; the Pro Touch adds a second mic in each bud and a third tip size. Both run Bluetooth 5.3 on a 2,000mAh phone-charging case.
| F9 V5.3 Pro | F9 Pro Touch | |
|---|---|---|
| Bluetooth | 5.3 | 5.3 |
| Mics | CVC 8.0 | Four mics, CVC 8.1 |
| Call noise reduction | Up to 25 dB | Up to 30 dB |
| Ear tips | Two sizes | Three sizes |
| Bluetooth name | F9 | YD03 |
| Case | 2,000mAh, LED | 2,000mAh, digital LED |
Take the V5.3 Pro if calls are occasional and the case is the main draw. Take the F9 Pro Touch if you talk on the move and want a medium tip for a snug seal.
Run the checklist before the pair joins your kit:
Want a big case with a real rain rating and bigger drivers? The MDNS BTH-F9-5 pairs a 2,000mAh LED case with 8mm drivers and buds the maker rates for 30 minutes fully under water. It trades Bluetooth 5.3 for 5.0.
One more fork in the road: pocket or bag. The Volt Plus Tech F9 Mini swaps the power bank for a thin IPX7 shell made for jeans. You lose the phone rescue and the big reserve, and gain a pair that never bulges.
Yes. The Galaxy S10 wording is only a compatibility tag; any Bluetooth phone, tablet or computer pairs with them. Look for F9 in the Bluetooth list.
Light drizzle, yes. The buds carry an IPX3 nano-coating and the case has no rating, so steady rain or a rinse under the tap is out.
Five hours and more per bud charge, and roughly 25 hours when you add the case refills, per the maker. Every phone top-up from the case eats into that total.
Two buds, the charging case, ear tips in small and large, a USB charging lead and a printed manual.
The noise reduction works on the mic side: CVC 8.0 tidies your voice for the caller. Music relies on the seal of the ear tips.