Call ENC is the A90 feature most relevant to meetings: it processes microphone input to reduce competing environmental sound for the listener on the other end. It is not active noise cancellation for what you hear.
ProductSearch verdict
ENC can improve outgoing speech in ordinary conditions, but it cannot guarantee clear voice capture in wind or dense background noise.
The microphones apply environmental-noise processing during calls, which can make speech easier to understand in calm or moderately noisy spaces. The design is suitable for phone calls and short video meetings, though callers in difficult environments should expect less consistent results than from a headset boom mic.
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Btootos A90 earbuds, LED charging case, silicone ear tips and USB-C charging cable.
Evidence and coverage
Independent editorial testing is limited, so the strongest available evidence is the published feature list, buyer feedback and hands-on owner coverage.
The listing documents Bluetooth 5.4, 14.2 mm drivers, call ENC, battery life, codecs and the IP7 protection claim.
Check detailsLarge-sample buyer feedback covers pairing, fit, battery, call quality, durability and value over time.
Read feedbackHands-on videos can show the physical size, charging display, pairing flow, fit and microphone behavior.
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Alternatives
This comparison separates microphone ENC from listening ANC and app features.
Buyer questions
It processes microphone input to reduce environmental noise sent to the other caller. It does not actively cancel the sound you hear.
It works as a standard Bluetooth audio device with compatible phones and computers, subject to each device's Bluetooth setup.
It may work in calm conditions, but wind and traffic are difficult for small earbud microphones and can reduce clarity.
Btootos A90
From $18.00
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