SoundBot® SB555 Bluetooth 4.0 Sports Active Wireless Earbud Headset for 5hrs of Music Streaming & Hands-Free Talking [amazon.com]
Price = $ 22.99 – $ 5 discount (promo: X7CJPURB) = $ 17.99
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from the product page:

• Full featured & one of a kind stylish ergonomic compact and sleek design that turns the headset into a wearable fashion statement with state-of-the-art premium audio driver to deliver Hi-Fi potent base, crystal clear calls, and HD dynamic Stereo music listening experiences.
• Ultra lightweight on the ears with heavy sound response to provide maximum performance, portability, comfort, and mobility. Sweat proof premium silicon ear tip feature makes it ideal for casual or sports active users with indoor and outdoor usage, or any other occasions.
• Universal Bluetooth 4.0 (backward compatible) wireless technology w/ Multi-Point Connection Technology supports simultaneous pairing to two Bluetooth enabled devices at once including iPhones, iPods, iPad, smartphones, Android, tablets, laptop, computer, MP3 media players, and much more.
• Intuitive easy access in-line control buttons and built-in mic for phone call management, volume adjustment, and music playback with convenience. Built-in rechargeable lithium-ion battery with level gauge indicator for supported iOS devices including iPhone, iPad, iPod, Macbook, iMac,..etc.
• Advanced AptX digital decoder, A2DP technology, Clear Voice Capture CVC 6.0, for enhanced call clarity and music streaming.