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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-26 · 6 min read · Independent comparison
• Donerton Earbuds — biggest strength: Bluetooth 5.4 with a 15 m range, 13 mm dynamic drivers, a 3.9 g per-bud weight, a dual LED power display and a 12-month repair warranty.
• Donerton Earbuds — biggest trade-off: 40 hours total battery (8 h per charge) is roughly half what the sajawass case claims, and the fit is a standard in-ear seal rather than a hooked sports design.
• sajawass Earbuds — biggest strength: Up to 75 hours total playtime, an 8-hour single charge, IPX7 water protection and TPE ear hooks that resist slipping during runs.
• sajawass Earbuds — biggest trade-off: Older Bluetooth 5.3 with a 10 m range, a shorter 90-day warranty, and a bulkier hooked shape that isn't as pocket-friendly for casual everyday wear.
• Choose Donerton if you want modern connectivity, low weight and a long warranty for commuting, calls and general listening.
• Choose sajawass if you want the longest possible runtime and a fit that stays put through sweat, sprints and long sessions.
The Donerton W90 is built around connection quality and everyday comfort. It runs Bluetooth 5.4, the newer of the two standards here, and Donerton states that this generation is better at resisting interference, which matters most when you're taking calls in busy places. The Bluetooth range is listed at 15 meters, so you can leave your phone on a bench or counter and keep listening while you move around. The buds pair automatically with your device once you've connected them the first time.
Sound is handled by 13 mm dynamic drivers with polymer diaphragms, tuned for a balanced three-channel presentation rather than a heavy bass push. For calls, there are built-in microphones paired with a CVC noise-reduction algorithm, which is designed to separate your voice from background chatter. That combination — Bluetooth 5.4 plus CVC — is the strongest reason to pick these if you spend a lot of time on voice calls.
Buy the Donerton if you want the newest Bluetooth version, a genuinely light bud, call-focused noise reduction and the security of a year-long warranty. Skip it if marathon battery life is your number one priority, or if you need a hook-style fit that survives intense, sweaty training.
sajawass Earbuds: Who It's For
The sajawass BX31 is aimed squarely at people who wear earbuds while moving. The defining feature is the ear hook, made from a TPE elastic material that the brand describes as ultra-light and ergonomic for extended wear. Instead of relying only on a silicone tip to hold the bud in place, the hook wraps around the ear — a design that tends to stay put when you're running, lifting or moving your head. Three tip sizes are included so you can find a snug seal, and the IPX7 nano-coating is there to shrug off sweat and rain.
Battery is the second headline. sajawass claims over 8 hours from a single charge and a total of 75 hours with the charging case — nearly double the Donerton's total figure. The case uses USB-C and charges in about 1.5 hours, and a smart LED digital display shows consumption for both the buds and the case so you can plan when to plug in.
Audio comes from a 13 mm dynamic driver, tuned for punchy bass, a mellow midrange and clear treble. For calls, there's a built-in microphone using ENC (environmental noise cancellation) to separate your voice from surrounding sound. Controls are touch-based and cover play/pause, answering and rejecting calls, volume, track switching and voice-assistant activation. Compatibility is limited to Bluetooth music players such as phones and tablets, and the connection is Bluetooth 5.3 with a 10-meter range.
Two things to weigh before buying. The warranty is listed at 90 days from the manufacturer, which is shorter than the Donerton's 12 months. And the hooked, white design is more sporty than subtle — great for the gym, less ideal if you want something that disappears into a pocket.
Buy the sajawass if you want maximum runtime and a fit that won't budge during workouts. Skip it if you want the newer Bluetooth generation, a longer warranty, or a more understated look for the office.
• Best for total battery life → sajawass Earbuds (75 hours with the case vs 40 hours on the Donerton).
• Best for newer connectivity → Donerton Earbuds (Bluetooth 5.4 vs Bluetooth 5.3).
• Best for wireless range → Donerton Earbuds (15 m vs 10 m).
• Best for workout security → sajawass Earbuds (TPE ear hooks plus IPX7 water protection).
• Best for all-day lightness → Donerton Earbuds (3.9 g per bud, compact pocketable case).
• Best for call clarity in noisy places → a close call. Donerton uses CVC noise reduction; sajawass uses ENC. Both target voice isolation, so pick on fit and battery instead.
• Best for warranty peace of mind → Donerton Earbuds (12-month repair support vs 90 days).
• Best for sweat and rain → sajawass Earbuds (IPX7 nano-coating rated for sweating and getting wet).
In my opinion, the Donerton Earbuds are the better all-round pick for most people. Bluetooth 5.4, a 15 m range, 3.9 g buds, a pocketable case and a 12-month warranty cover the everyday jobs — commuting, calls, laptop work and casual listening — with fewer compromises. I'd choose the sajawass Earbuds only if runtime and a locked-in sports fit are non-negotiable for you, because 75 hours and ear hooks are genuinely hard to beat for training. If you're still torn, decide which matters more: modern connectivity and warranty, or raw battery and grip. Check the current price on Amazon before you commit, since that's the one variable that can tip a close call.
how to ear buds work
Earbuds like these receive audio over Bluetooth from your phone, tablet or laptop and play it through small dynamic drivers inside the bud. The Donerton uses 13 mm dynamic drivers with Bluetooth 5.4, while the sajawass uses a 13 mm dynamic driver with Bluetooth 5.3. Both pair wirelessly, so there's no headphone jack involved.
how to ear buds
To wear them, gently twist each bud into your ear canal so it seals; the sajawass also has TPE ear hooks that sit around the ear for extra grip. The Donerton weighs 3.9 g per bud and is designed not to protrude, while the sajawass includes three tip sizes so you can find a snug fit. A proper seal is what gives you the intended bass and clarity.
how to ear earbuds
"Ear earbuds" usually means getting them seated correctly for comfort and sound. Try each included tip size, insert at a slight angle, and adjust until the sound feels full rather than thin. The sajawass's hooked shape and the Donerton's ergonomic in-ear design both aim to stay comfortable over long sessions — 8 hours of playback per charge on each.
how to open ear buds
There's no lid trick to it — open the charging case and take the buds out. The Donerton auto-pairs with your device after the first connection, and both models use touch controls on the buds for play, pause, volume and calls. If nothing happens, charge the case over USB-C first; both refill in about 1.5 hours.
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