TRAUSI Wireless Bluetooth 5.4 Headphones: problems, parts and running costs

Checked: 2026-10-19

Summary

The TRAUSI i27 is a sealed in-ear sport earbud with soft over-ear hooks, an IPX7 water rating and a claimed 6 hours per charge plus 54 hours with the case; no lab has measured this exact model, so sound, call quality and battery totals are seller claims [1][4][5]. The reported problems are modest single-charge battery, optimistic case arithmetic, a call mic that struggles in noise and no documented codec, multipoint or listening ANC [4][5][6]. Running cost is effectively zero — no app, subscription or consumables — and at the observed $9.98 marketplace price it is a plausible sport or backup pair, while above $25 the tested JLab GO Sport+ is the safer buy [3][12][13].

Common problems and fixes

Single-charge battery — 6 hours per charge is modest for a hooked sport bud and below the category average SoundGuys tracks; the 54-hour total assumes roughly eight trips back to the case. [4][5]
Optimistic battery arithmetic — the 400 mAh case is small for a claimed 54 hours; peers near 50 hours typically carry 500–600 mAh, so treat 54 hours as a ceiling rather than a plan. [5]
No codec, multipoint or latency documentation — no codec is named anywhere, no multipoint pairing is mentioned and the low-latency claim comes with no figure; SoundGuys’ 100 ms is catalog data, not a measurement. [4][5]
Charging and pairing faults — the manuals’ troubleshooting covers charging faults, only one earbud playing and intermittent pairing: check the case charge, clean and dry the charging contacts, seat each earbud, remove and re-add the Bluetooth pairing and check the speaker mesh. [8][9]
Conflicting specs and manuals — TRAUSI and retailers say Bluetooth 5.4 while SoundGuys lists 5.3, and manual variants assign different tap patterns, so errors are plausible if you follow online instructions for the wrong revision. [1][4][8][9]
Warranty unknown — no duration is published; one hosted manual claims 90 days, which does not prove every unit has it. [7][10]

Parts and consumables

Yearly running cost

No app, subscription or consumable filter is documented, so recurring cost is electricity and replacement. A hypothetical 3 Wh per case refill times 100 annual recharges is 0.3 kWh, about $0.08 per year at an assumed $0.25 per kWh — illustrative, not measured. Replacement dominates: at the observed $9.98 price, buying a new pair every two years averages $4.99 per year, and every year averages $9.98 per year; no validated battery or product lifespan exists. [3][4][9]

When it is a good buy

TrueGether lists a new black pair at $9.98 (October 2026) with returns not accepted; Newegg lists a blue pair at $45.99 (October 2026) with free 30-day returns [2][3]. At $10–15 delivered it is an acceptable risk as a backup sport pair; at $16–24 it needs good seller returns; at $25 or above the $29.99 JLab GO Sport+ — independently tested, with a published 2-year warranty — is the better evidence-backed purchase [9][12][13]. Named alternatives: the JLab GO Sport+ at $29.99 direct is the better choice when the delivered price approaches $25–30 or you want tested performance and a warranty; the Soundcore Sport X20 at $79.99 direct is the better choice when you want real listening ANC and 12 hours per charge [12][14].