- 12 months warranty Model: ACCENTUM True Wireless ~ Immerse in all-day audio with ACCENTUM True Wireless's ultra-comfy ergonomic design, Sennheiser's superior sound, hybrid ANC, and up to 28 hours battery. ~ Bluetooth 5.3 Bluetooth Protocol : A2DP, AVRCP, HFP, TMAP, PBP Drive unit: 7 mm diameter Speaker frequency range：5 Hz to 21 kHz Bluetooth Transmission frequency : 2,402 MHz to 2,480 MHz; GFSK, π/4 DQPSK / 8DPSK Music playback time :28 hrs (w/ charging case) Interface type: Type-C Weight (single earbud):5.5 g Accessories Included: earbuds x 1pair, Charging case x 1pc, USB-C charging cable x 1pc, ear tip sets (XS/S/M/L) x 1pair ~ Sennheiser Original - Parallel import - Return and refund are not accept. - Free shipping to HK/Macau when spending over $500 onwards - China area shipping fee $130 + Local SF Express - Two business day shipping. Sent via SF express. - Exchange of defective units purchased in 7 days - 12 months warranty ~ Photo for reference only