Dec 2022. TWM3 pair - lasted 1 month. Argos replaced. Replacement pair lasted until Feb 2023, 1 month - Argos refunded. Avoid TWM3s like plague! HD450BTs - lasted a whole 8 months. Warranty repair returned (only with help from Richer Sounds). Unable to contact Senn "customer service" - non existent. 450s just vanished into customer service hell, no acknowledgement of receipt, no replacement, Welcome to Sennheiser 2023. Shoddy product quality and world-class dismal customer service.
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