Product Description Ergonomic Design The shape of A1 perfectly fits the curve of inner contour of ear. Mini sized to be right for small ear. With round soft silicone Earplugs, it can offer more wearing stability and comfort when in use.Whether you' re running or jumping, the earbuds will stay in ear securely. One Step Pairing Pick up 2 headsets from the charging case and they will connect each other automatically. Then only one step easily enter mobile phone’s Bluetooth setting and choose "TOZO-A1" to pair the earbuds. Special Design For ergonomic Ear Tips Ear curve in accordance with ergonomic design, less pressure in the ears, long wear without fatigue. light as a feather The single earbuds weighs only 3.7g, making it as light as a feather and discreet in the ear,Wearing without feeling, so that you will not be uncomfortable to wear this headset for a long time. The Advanced Bluetooth 5.0 Technology Support HSP, HFP, A2DP, AVRCP. Provides in-call stereo sound.Greatly improve the transmission speed and providing you with a low-latency listening experience. Easy to carry With Small size, the A1 is more suitable for carrying, outdoor sports, cycling, crawling and so on , and more convenient to carry.Let you enjoy music in anytime,and anywhere.