Heiyo Wireless Sport Bluetooth Headphones, In-Ear Fit Earhook Secure IPX4 Sweatproof Earphones with Mic and 7-Hour Playing Time for Running,Gym and Outdoor Sports-Green COMFORT & SECURE FIT DESIGN: This wireless Bluetooth Earphone In-ear ergonomic design and TPU earhook design ensure you wear comfortably & remain stable in your ear. Ergonomic ear hooks & earbuds design with 3(S/M/L) pairs of soft rubber-made ear plugs are suitable different ears shape for long-time without any pressure wearing. ADVANCED TECHNOLOGY: With Bluetooth 4.1 +EDR +CSR 8635 Chipset + CVC version 6.0 noise cancellation technology offering strong signal & perfect HD stereo sound. Support automatically reporting in-coming phone number and 33Feet(10m) Operating distance out of open space. OUTSTANDING SWEAT PROOF: IPX4 moist-proof and drizzle-proof in-ear Bluetooth headset allows you to freely release your sports passion while exercising, running, jogging, cycling, hiking, driving, camping, fishing or other outdoor sports. Voice Prompt function enables you to know using status right now; supporting to Volume+/-, Next/Previous song, Pause/Play, Answer/Reject. USAGE FOR LONG TIME: CSR unique technology to save power. Built-in rechargeable 150mAh high quality Lithium battery and support 7.5-hour talking time, 6.5-hour playing time, 2-hour charging time. Works with Bluetooth device of Apple iPhone iPad, Android Samsung S7 S6 edge LG HTC Xiaomi Huawei Sony Ericsson Google Nexus Nokia, other smart phones, tablets and other Bluetooth devices. MULTI-POINTS CONNECTION: The Bluetooth Earphone can pair 2 Bluetooth devices at the same time.