- 12 months warranty Model: HD 650 ~ Frequency Response: 12 – 41,000 Hz Hz Braided wire length: 3m ~ Including: headphones x 1pc, 3.5 mm jack x 1pc, 1/4" connector x 1pc ~ 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 - Ships within 2-3 weeks. Sent via SF express - Exchange of defective units purchased in 7 days - 12 months warranty ~ *Photo for reference only