<b>True wireless earbuds bluetooth 5.0, IPX5 sweatproof headphones for sports.</b><br> <b>What We Differ with other wireless earbuds:</b><br> (1) Unique Cat charging case, 4 led lights show different energy reminding you when to charge.<br> (2) Ergonomic wireless earbuds design for ear canal, ensure secure and comfort experience, stay put not fall even in sports.<br> (3) Adopting ultra lightweight material, one earbud less than 4g.<br> (4) Best noise cancelling experience with the wireless earbuds, no more noise to disturb your world.<br> (5) Earbuds come with HD clear microphone providing real HD communication experience.<br> ( 6) Quickly charged earbuds in 1H, offering 3.5-4H playtime, about 60 songs and 2 movies. Upgrade type-c charge for 2H full charging the case.<br> ( 7)Wide Compatibility Bluetooth 5.0 headphones are engineered to work well with Android / IOS smartphones, tablet, MP3, MP4, PC, laptop, etc.<br> <b>Version of Bluetooth:</b>5.0.<br> <b>Distance of Bluetooth:</b>10m.<br> <b>Impedance ohm value:</b>16Ω.<br> <b>Battery specifications:</b>Polymer lithium battery.<br> <b>Battery capacity of headsets:</b>40mAh.<br> <b>Battery capacity of chariging box:</b>500mAh.<br> <b>Frequency range:</b>50Hz-24KHz.<br> <b>Transmitting power:</b>Class2 (-6dBm - 4dBm) 2.5mW.<br> <b>Charging and working voltage:</b>5V/3.7V.<br> <b>Charging time:</b>1.5 hours.<br> <b>Charging current:</b>30 mA.<br> <b>Fully charged light voltage:</b>4.05-4.2V.<br> <b>Low power shutdown voltage:</b>about 3.0V.<br> <b>Listening Music:</b>about 4 hours.<br> <b>talk time:</b>about 5 hours.<br> <b>Sensitivity:</b>100dB.<br> <b>Rated output power:</b>3mW.<br> <b>maximum output power:</b>5mW.<br> <b>Sensitivity:</b>-42±3dB.<br> <b>What You Get in our bluetooth earbuds:</b><br> 2 *Wireless earbuds.<br> 1 * Portable Magnetic Charging Case.<br> 1 *Type-C cable.<br> 3 * Eartips.