Tronfy KeepSport T3 M4B AptX Wireless Sport Stereo Headset with Inline Volume Control and Mic (Black) AptX audio coding technology from CSR offer high quality stereo sound, with Noise-Isolating design With an assortment of three different sized ear gels and three different sized Ergonomic design ear stabilizers Inline controller for answering phone calls, skipping tracks, controlling volume. Bluetooth 4.0, Smart Voice alerts; Good range, Use your music device left/right side, above/below waist, doesn't matter with SignalPlus About 6 hours of listening/talk time, Up to 200 hours of standby time; Display headset's battery level on iOS; Auto-turn off without connection for 10 min with Deep Sleep power-saving mode Compatible with Apple Watch, IPhone 6, 6 Plus, 5S, 5c, 5, 4S, 4, IPod, IPad, Laptop, PC, Car Kit, Samsung Galaxy Note 3, Note 2, S6, S5, S4, S3, S2, LG, HTC, MOTO X, Most Android Smart Phones and Tablets and Other Bluetooth-enabled Devices