Best pairs
i12-style in-ear buds · 9h per charge · IPX7

jaddsa T18

Soft-tip stem earbuds that last up to 9 hours between top-ups, with a digit display on the case, IPX7 sweat-proofing and a three-year warranty.

  • BatteryUp to 9h per charge, 48h with the case
  • Sound13.2mm dynamic drivers
  • Bluetooth5.3, about 33ft range
  • WaterIPX7
  • Weight0.13oz (about 3.7g) per bud
  • Warranty3 years
Lovely for
  • You want the longest stretch between bud charges
  • You listen through full work shifts, long drives as a passenger or flights
  • You like a bold red pair, or a clean all-white one
  • A three-year warranty helps you buy with confidence
Skip if
  • You want the open, tip-free i12 fit
  • You need noise cancelling beyond what tips block
  • You want the lightest, smallest case in your pocket
Grab this pair
Colors & sets

The T18 in pure white or red

Nine hours per charge keep the jaddsa T18 going past a work shift

The number that makes the jaddsa T18 stand out is 9: that is how many hours of playback jaddsa rates the buds for on a single charge. Most stem earbuds in this style stop at 5 to 8 hours, so the T18 is the pair that keeps playing after the others have gone back to the case.

With the charging case added, the total reaches 48 hours. A dual LED display on the front shows the charge left in the case and in the buds, so you can tell at a glance whether today is a charging day.

Nine hours in one go matters more than the case total for certain days:

  • Long shifts: warehouse, retail or delivery days where the case stays in a locker.
  • Flights and coach trips: a full journey of films and playlists without a pause.
  • Study sessions: a morning and an afternoon of focus music in one charge.
  • Hiking days: fewer stops to dig the case out of a backpack.
Real-life hours: the 9-hour figure is for music at a moderate volume. Calls, high volume and cold weather all shorten it, so plan on a little less on a winter walk or a day full of meetings.

Latency is low enough for video, too. jaddsa quotes a delay of roughly 50 to 65 milliseconds, small enough that voices stay in step with lips on a phone or tablet. Fast mobile games may still show a slight lag, as they do on most Bluetooth buds.

When the case does need power, a USB-C cable refills it in about 2 hours. Plugging in overnight once a week or so covers most listening habits. For what the lights and digits mean while charging, and how to fix a bud that stays flat, the charging help has the details.

Spec card

Every number on the box

SpecValue
Modeljaddsa T18
FitIn-ear stem buds, soft silicone tips in 3 sizes
BluetoothBluetooth 5.3, about 33ft (10m) range
Auto-connectReconnects to the last device when taken from the case
Driver13.2mm dynamic
Impedance32 ohm
Sensitivity98dB
LatencyAbout 50–65ms, as quoted by jaddsa
Noise controlPassive isolation from the tips
Playtime per chargeUp to 9 hours
Total with caseUp to 48 hours
ChargingUSB-C fast charging, about 2 hours to full
Case displayDual LED digits for the case and buds
Water resistanceIPX7
ControlsTouch: music, calls, voice assistant
Earbud weight0.13oz (about 3.7g) each
Case size and weightAbout 6.5 × 5.1 × 2.5cm, 65g
ColorsPure white, red
Warranty3 years

Fit the T18's 13.2mm drivers snugly with the right tip

The T18 carries 13.2mm dynamic drivers tuned for strong bass, balanced mids and crisp highs. Like every sealed earbud, it only sounds its best when the silicone tip closes off the ear canal, and jaddsa includes three tip sizes so you can get there.

A quick way to find your size:

  1. Start with the medium tips fitted in the box.
  2. Insert each bud and turn it slightly so the stem points down along your jaw.
  3. Play a bass-heavy track at half volume.
  4. If the bass is weak or the bud shifts when you talk, try the large tips.
  5. If your ears feel sore within half an hour, move to the small ones.

At about 0.13oz, around 3.7 grams per bud, the T18 stays comfortable through a long session. jaddsa designed the shell to rest naturally in the ear, and the right tip is what keeps it in place during a jog.

The tips also give the T18 its only noise control. There is no active noise cancelling, but a good seal cuts out a lot of fan hum and street noise on its own. For calls, jaddsa uses an upgraded microphone setup meant to keep your voice clear in busy places.

Tips wear out slowly, too. If the silicone turns shiny, stiff or loose on the nozzle after months of daily use, replace them with fresh tips of the same size, and the bass and comfort come straight back.

Bluetooth 5.3 connects the T18 to phones, laptops, tablets and smartwatches at up to about 33 feet. Once paired, the buds rejoin the last device the moment they are lifted out. The pairing walkthrough covers first-time setup on iPhone and Android.

Among the pairs

Where this pair lands

i12 TWS earbuds models by fit and case, September 2026. Highlighted: jaddsa T18.

A red T18 stands out, a white one blends in

The T18 comes in two finishes with the same buds, drivers, battery and warranty inside: pure white and red. Picking between them is mostly about personality and where the case will live.

  • Pure white: the classic stem-earbud look. It matches white phones and chargers, and a quick wipe keeps the gloss bright.
  • Red: easy to spot in a gym bag, on a dark desk or in a car door pocket, and less likely to be mixed up with someone else's buds at home.

Both colors carry an IPX7 rating, so sweat and rain are covered on either. Dry the buds before they go back in the case, since moisture on the charging pins is what causes charging trouble later.

The T18's touch controls respond to taps on either bud. jaddsa describes an upgraded T18 chip that makes the touch pads accurate and quick, which means fewer accidental pauses when you adjust the fit. You can manage music, answer and end calls and call up your voice assistant. The common tap patterns for stem earbuds are on the touch-control cheat card, and the T18 manual confirms which ones apply.

Measuring about 6.5 × 5.1 × 2.5cm and weighing around 65 grams, the case is a bit chunkier than the slimmest cases, which is the trade for the long battery. It still fits a jacket pocket, and its rounded edges keep it from snagging.

Fancy color but in a softer shade? The i12 colors rundown covers rose gold, dark blue and pastel options across other models.

Trade-ins

Three other pairs to try

1 BESNOOW I53
Calls in noisy places BESNOOW I53
The BESNOOW I53 brings four ENC mics, 14.2mm drivers and Bluetooth 5.4 with a 48-hour case.
  • Silicone tips seal out street noise
  • Case shows the battery in digits
  • Bluetooth 5.4 · 48h with case
Grab this pair
2 Fhumsh A10
Two-device pairing Fhumsh A10
The Fhumsh A10 hops between a laptop and a phone, with IPX7 and up to 50 hours with the case.
  • Silicone tips seal out street noise
  • Case shows the battery in digits
  • Bluetooth 5.3 · 50h with case
Grab this pair
3 TAGRY X08
Qi charging and 5-year cover TAGRY X08
The TAGRY X08 refills on a wireless pad and carries a five-year manufacturer warranty.
  • Silicone tips seal out street noise
  • Case shows the battery in digits
  • Bluetooth 5.x · 60h with case
Grab this pair

Three years of cover set the T18 apart from the BESNOOW I53

jaddsa backs the T18 with a three-year warranty, longer than most stem earbuds at this level. Put next to the BESNOOW I53 and the Fhumsh A10, the T18 trades a few call features for extra hours per charge and a longer promise.

jaddsa T18BESNOOW I53Fhumsh A10
Per chargeUp to 9hUp to 8hUp to 8h
With case48h48h50h
Drivers13.2mm14.2mm13mm
Bluetooth5.35.45.3
WaterIPX7IPX7IPX7
Warranty3 years2 years90 days

How to choose between them:

  • Pick the T18 for the longest single session and the longest warranty.
  • Pick the BESNOOW I53 if calls matter most; its four ENC mics are built for noisy places.
  • Pick the Fhumsh A10 for two-device pairing between a laptop and a phone.

Before ordering, check one thing: all three seal the ear with silicone tips. If you want the airy open fit of the classic stem shape instead, open-fit pairs such as the Jxrev J53 are the better match.

A few checks make the warranty easy to use if you ever need it. Keep the order confirmation, note the date the buds arrived, and hold on to the small manual, which carries the model name. If a bud stops charging or a touch pad stops responding within the three years, those details are all a claim usually asks for.

For everyone else, the T18 is a comfortable, long-running pair with a warranty that covers years of daily use.

Quick answers

Before these go in your ears

How long does the jaddsa T18 last on one charge?

Up to 9 hours of music per charge at moderate volume, and up to 48 hours in total with the case.

Is the jaddsa T18 waterproof?

It is rated IPX7, so sweat, rain and splashes are covered. Keep it out of pools and dry it before charging.

What colors does the T18 come in?

Pure white and red. Both have the same drivers, battery, case and warranty.

What warranty does the jaddsa T18 have?

jaddsa lists a three-year warranty.

Does the T18 have noise cancelling?

No active noise cancelling. The silicone tips block outside sound passively once you find the right size.