Features 1 bluetooth 5 0 technology It can be compatible with the old version bringing the advantages of faster and longer transmission distance 2 Snug and Comfortable Design In ear design Unique structural design with lightweight makes the earbuds fits comfortably yet securely in your ear 3 New stereo surround sound effect Independent cavity structure strong magnetic horn High frequency is not irritating medium frequency voice is full low frequency surge powerful to meet different types of music needs 4 Compatible to All bluetooth enabled Devices Smart compatible with 99 of the bluetooth devices on the market and compatible with all kinds of APP 5 Sound in Single or Stereo Hear every detail and get exceptional surround sound with 2 earbuds in stereo mode Sound quality convenience and style never looked so good 6 Cancel Out The Noise Bring On The Sound Reduces background noise for better calls with the earbuds Nothing will interfere with your personal calls or your personal listening enjoyment 7 One key to realize the functions of receiving playing pause replay switch and so on Specification 1 Version V5 0 EDR2 Battery parameters 50MA4 Standby current 1MA5 Working current 15MA6 Signal distance 10 meters7 Music time Main earphone 3 hours accessory earphone 4 hours 8 Talking time About 4 6 hours9 Charging case battery capability 1000mAh10 Charging times 7 8 times11 Earbud 25 15mm12 Portable charging case 60 32 32mmPackage included 2 x