Cloin Bluetooth Earbuds are crafted from ABS plastic and feature an ear clip design for various ear shapes. Built in 250mAh rechargeable battery capacity of the charging case can charge the earbuds 4 times. Equipped with Bluetooth V5.4 for high-definition calls and operate within the 2.402-2.480GHz frequency range, supporting AAC/SBC protocols and having a 590 inch transmission range. The intelligent touch control enables power on/off, song switching, call management, and voice assistant activation. Dual-device connection allows easy switching among gaming, work, and calls. With an IPX4 waterproof rating, they are suitable for daily commuting, office use, or sports. Add your logo to make it a powerful promotional item.