wireless up to approximately 21 hours of call delay ear available Blue BL Audio-Technica Bluetooth/completely earphones, playback/enhanced

Technical Conformity Mark certified product (Frequency band: 2.4GHz band) ●Earphone design that makes it easy to wear in your ears and prevents fatigue.The finger-shaped design and tactile material make them easy to hold and difficult to drop from your hands. ●Newly developed charging case that is lightweight and easy to carry. The earphones are designed at an angle that makes it easy to take them out of the case, and the material has the same tactile feel as the earphones, making them difficult to fall out of your hands. Comes with 4 types of earpieces made of soft silicone (XS, S, M, L sizes) that provide optimal sound quality and fit ●Achieves high waterproof performance IPX5/7 that allows the earphones to be washed with water. You don't have to worry about it even if you get wet in the rain or sweat. There is no need to worry even if you drop it into water. Intuitive operation with one button without hesitation. You can also adjust the volume while listening or calling without stress. You can make clear, hands-free calls with both ears or one ear. It suppresses wind noise and allows you to talk safely both indoors and outdoors. ●Sidetone function makes it easier to talk by returning your voice to the earphones. You won't have to raise your voice unnecessarily, which is common during calls. Other convenient features ● Power on and use immediately by simply taking it out of the case ● Fast Pair compatible for convenient connection with an Android device ● Can be used with just one ear ● Simultaneous left and right transmission method for stable connection that is resistant to sound interruptions ● Low Latency Mode that suppresses the lag between sound and video ● Continuous playback of about 7 hours, maximum playback of about 21 hours ● Multi-pairing function that allows you to register multiple devices