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【advanced bluetooth-compatible technology】 v5.4 chip module ensures stable connectivity, smoother and faster transmission experience 【ergonomic design】 soft and comfortable to wear, paired with lightweight design, more in line with the ear canal 【touch controls】 finger-to-finger touch, sensitive and convenient, simply tap the earphones lightly to complete tasks 【wide compatibility】 powerful connectivity compatible with wireless devices such as mobile phones, tablets, laptops, etc. 【long battery life】 charging case battery capacity 200mah, earphones battery capacity 25mah, for worry-free listening Specifications: Material: abs + pc Bluetooth-compatible version: 5.4 Earphone battery capacity: 25mah Charging case battery capacity: 200mah Compatible devices: mobile phones, tablets, laptops, and other wireless devices