Features:<br />[ NEW UPGRADE AUTOMATIC BOOT PAIRING ]--Remove the headphones from the charging pin will automatically boot/pair/connect back. Say goodbye to boot manually.<br />[ BT 5.0 ]--The latest 5.0 BT chip, call quality and compatibility improve significantly.<br />[ LIVE FOR MUSIC ]--Deep and thick bass, beautiful music sound, make you feel like in a live house.<br />[ 10M BARRIER-FREE TRANSMISSION ]--The connection is stable within 10 meters. Enjoy the freedom of unlimited.<br />[ FASHION AND CONVENIENT TOUCH KEYS ]--Easily controlled by your single finger, easier to touch and operate.<br />[ EASY TO CARRY AND COMFORTABLE TO WEAR ]--Magnetically absorbed in the charging box, take it to wherever you want and no need to worry it out of power.<br />[ MINI 500MAH CHARGING &amp; STORAGE BOX ]--Magnetically attracted in the charging box through the charging touch spot, extremely convenient.<br/>Specifications:<br />Color: Black<br />Material: ABS<br />Impedance: 32Ω<br />Sensitivity: 98dB<br />Driver unit: 6mm<br />Active noise reduction: No<br />SNR: &gt; 92dB<br />Frequency response range: 2.402MHz-2.480MHz<br />Fosc: 24MHz<br />CPU frequency: 96MHz<br />Frequency response&#xff1a;20Hz-20KHz<br />Microphone: Built-in MIC<br />BT version: V5.0 &#43;BR&#43;EDR&#43;BLE<br />BT protocol: a2dpavctpavdtpavrcphfpsppsmp<br />Transmission distance: 10m(no-barrier)<br />Power supply: DC2.2V-5.5V<br />Charging time: 1 hour<br />Service time: Telephone call 4-7hours, playing music 3-4hours<br />Standby time: 10-15 days<br />Battery capacity: Built-in 3.7V/50mAh Li-ion battery for each earbud, built-in 5V/500mAh Li-ion battery for charging base(INCLUDED)<br />Ear buds weight: 3.5g/ 0.12oz(each one)<br />Package weight: 98g/ 3.46oz<br />Package size: 10 * 6.8 * 4.4cm/ 3.94 * 2.68 * 1.73in<br/>Package list:<br />1 * Pair of earphones<br />2 * Pair of earmuffs<br />1 * Charging cable<br />1 * Charging case<br />1 * User manual(English)