Advanced Compatibility
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<br />The Bluetooth headset can easily and quickly connect with smartphones, tablets, TVs and other Bluetooth devices within 33 feet(10M).
<br />1.If you have problem with the Bluetooth connection, please contact us via Amazon message, which can always be solved easily after the personalized guidance.
<br />2.PLEASE make sure the driver software of receiving adapter is fully updated when connected to PC or laptop, and you need a SEPARATE Bluetooth adapter when connected with TV. 
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<br />Dual Mode: Wireless & Wired
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<br />The wireless mode: With a built-in 400mAh battery which provides 6 hours' continuous wireless playback and let you get rid of the tangled cables on the move; The wired mode: Used as a wired headphone with an audio cable.
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<br />Foldable and Portable Design
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<br />The foldable design makes it easy to store them when not in use or during travels. The stainless steel slider headband allows you to find the perfect fit and provide excellent durability.
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<br />Note:
<br />1.Firstly, The ear cushions(inner diameter:1.2~2 inches) are designed as over-ear, not on-ear. Feeling like "on-ear" or "not over-ear enough "only depends on your ear size/shape.
<br />2. The microphone only works in the wireless mode.
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<br />Specification:
<br />-Bluetooth Version: 4.2
<br />-Range: 33 feet (10 meters)
<br />-Talking Time: Around 17 hours
<br />-Playback Time: Around 15 hours
<br />-Charging Time: 2.5~3 hours
<br />-Charging Voltage: 3.7V
<br />-Battery Capacity: 400mAh
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<br />Packing List:
<br />1x NewRice Bluetooth Headset
<br />1x 3.5mm Audio Cable
<br />1x USB Charging Cable
<br />1x User Manual