Listening to music while doing sports gives you optimal enjoyment and good health. Arealer X20 is a high-performance Bluetooth Headphone, which is specially designed for music lovers. Arealer X20 is characterized by Advanced Bluetooth 4.1 technology, Built-in high-grade microphone &amp; speaker, hands-free function and lightweight design. Its hands-free function can set free your hands from answering the call during exercise &amp; travel. What's more, the high-performance built-in microphone and speaker offers you gorgeous sound quality. Its lightweight and compact portable size is perfectly suitable for jogging, mountain-climbing, traveling, hiking and other sports.  <br><br>What is Arealer?<br>Arealer is a new &amp; professional Headphone Brand, Arealer Headphone is a High-grade Stereo Bluetooth Music Headphone, coming from professional Bluetooth Headphone manufacture, which uses Advanced Bluetooth 4.1 module, high-grade microphone &amp; speaker and high-performance built-in rechargeable lithium battery, offering fast-transmission speed and stable performance, wonderful sound effect, long standby time.<br><br><strong>Arealer X20 Features:</strong><br>[Advanced Bluetooth Technology] X20 Headset uses renowned Stereo Bluetooth 4.1 chip to ensure super-fast data transmission and stable performance.<br>[Super Sound Quality] X20 Headset uses high-performance Speaker, offering you high-quality audio, letting you greatly enjoy excellent stereo sound music effect.<br>[Convenient to control your music and calls] X20 Headset is equipped with function buttons which lets you easily controlling your music. It also supports hands-free with high-grade microphone, thoroughly setting free your hands from answering the call during exercise.<br>[Integrated Multi-Point Technology] X20 Headset Can simultaneously connect two smarts phone. So you can seamlessly switch between your business and personal phones.  <br>[Comfortable Wearing] Use creative ergonomics design, flexible neck-strap, lightweight; the adjustable hooks can be fixed stably when you are running or doing other activities.<br><br><strong>Offers Much More Convenience:</strong><br>* Compatible with almost all Bluetooth-enabled mobile devices such as, for iPhone 6S iPad iPod, for Samsung Galaxy S7 Note 5 other Android / iOS Smart Phones, Tablet PC, Laptop, etc.<br>* Built toward US Military standards for rain, sweat, shock and dust resistance (IP54 rated).<br>* The iOS device can show battery remaining capacity clearly.<br>* Up to 3 hours of continuous Music and 4 hours of Talk Time, 90 hours of Standby Time per charge cycle.<br><br><strong>Arealer X20 Specifications:  <br>Brand Name: Arealer<br>Model Number: X20</strong><br>Bluetooth Version: Bluetooth 4.1; Class 2.<br>Supports HSP, HFP, A2DP, AVRCP protocol.<br>Operation range: Up to 10 meters<br>Microphone Sensitivity: -42 dB<br>Response Range: 20-2000Hz<br>Sensitivity: -85dB at 0.1% BER<br>Impedance: 32Ω<br>High-quality 3.7V / 60mAh Rechargeable Li-ion battery<br>Music Playing Time: 3 hours (The Music Volume will affect the time)<br>Talk Time: 4 hours<br>Standby Time: 90 hours<br>Charge Time: 1.5 hours<br>Charge Port: Micro USB<br>The Cable length: 57cm<br>Color: Black+Blue<br>Main Item Weight: 14g / 0.49oz<br>Package size: 10.7 * 10.7 * 3.4cm / 4.21 * 4.21 * 1.34in<br>Package weight: 100g / 3.55oz<br><br><strong>Package List:</strong><br>1 * Arealer X20 Bluetooth Headset<br>1 * USB Cable<br>2 * Pair of Earbud<br>1 * Shirt Clip<br>1 * English User Manual