3 Pairs of ear tips, which are in different sizes and completely made of skin-friendly silicone material are included, will be a snug fit, comfortable for you to wear. With a 300mAh charging box, no need to worry about power off when you are outside, besides, your earbuds will be well protected when not in use. A slight touch on the surface of your earphone will make it work, giving convenience to your daily life, office time, driving or travel. Built-in high-sensitivity microphone reduces ambient noises and grasps the detail of voice, ideal for in-car calling or working use. Wireless dual ear stereo design, one step to pair, easy for you to activate the wireless headphones, simple for you to operate.