CiDoss Iron Man Limited Edition V4.1 Bluetooth Headset with LED for Smart Cellphones (Black) Newest cool design - this sci-fi ironman-shaped Bluetooth headset is a combination of clear voice, built-in microphone, multipoint function Precision tuned triple-mic with enhanced DSP, separate your speech from background noise, delivering clear voice quality to you and your listener Comes with replaceable battery : configure 2 replaceable battery, up to 6 x 2 hours talk time and 7 days standby Comfort -tested for extended wearing , the flexible materials and balanced lightweight design is also durable enough to withstand daily wear and tear Connect 2 devices at the same time - pair it with 2 Bluetooth-enabled devices at the same time and don't miss your calls when you have 2 cell phones