The WF-1000XM6 deliver the world's best noise cancelling performance with a 25% further reduction in noise compared to the predecessor model ~ Support Android and iOS (Whatsapp and Wechat message notifications) Version：v5.3 Bluetooth Profile : A2DP, AVRCP, HFP, HSP, TMAP, CSIP, MCP, VCP, CCP Weight : Earbud Approx. 6.5 g x 2 (including earbud tips (M)) (Continuous music playback time): Max. 8 hrs (NC ON) / Max. 12 hrs (NC OFF) Continuous communication time: Max. 5 hrs (NC ON) / Max. 5.5 hrs (NC OFF) WF-1000XM6 ~ • 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 / JD Logistics • Exchange of defective units purchased in 7 days ~ *Photo for reference only