Boult Z40 Ultra TWS Review in 10 points 

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[{"selector":"#anim-a6f97768-fd8d-4ecf-b226-df82707842a8","keyframes":{"opacity":[0,1]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-43516ec5-d41e-4d9e-b37f-dc07c580625f","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] Boult Z40 Ultra: Final Verdict – Sound quality: Balanced with emphasis on clarity, good bass, crisp highs – Active noise cancellation (ANC) up to 32dB – Clear microphone with environmental noise cancellation (ENC) – Battery life: Up to 100 hours with the charging case, fast charging – Limited iOS customization (no companion app) – Low latency mode not thoroughly tested