The JBL Endurance Peak 4 headphones deliver flexibility, powerful sound, and a rugged design that will move in sync with your rhythm. JBL Pure Bass Sound and Spatial Sound technologies provide powerful bass-heavy performance for your workout. ~ Support Android and iOS (Whatsapp and Wechat message notifications) Bluetooth 5.4 Dynamic Frequency Response Range (Hz): 20Hz – 20kHz Bluetooth music play time: Up to 12 hrs (ANC off) Net weight: 10.5 g per pc (Earbud), 80.5 g (charging case) Accessories Included: Earbud x1pair, Charging case x1pc, 3 sizes of ear tips x1pair DJBENDURPEAK4BLK DJBENDURPEAK4BLU DJBENDURPEAK4PUR DJBENDURPEAK4WHT ~ • Return and refund are not accept. • Free shipping to HK/Macau when spending over $500 onwards • China area shipping fee $130 + Local SF Express • Three business day shipping. Sent via SF express. • Exchange of defective units purchased in 7 days ~ *Photo for reference only