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Features: *350mAh large capacity magnetic charging compartment with long service life. *Graphene diaphragm, pure and stunning sound quality, brings you a unique stereo experience. *The compact body is comfortable and lightweight, making your ears comfortable and painless to wear for a long time. *IPX5 waterproof grade, can effectively protect headphones from damage, not afraid of sweating, and not afraid of wind and rain. *Touch control adjustment and invisible in ear ergonomic design ensure that the earphones remain stable in the ear, suitable for driving, sports, business, and leisure. *Upgrade the Bluetooth 5.2 chip, compatible with various Bluetooth products, stable wireless connection, lower power consumption, and more enjoyable calling and listening to music. Specifications: Product name: Bluetooth earphones Bluetooth version: 5.2 Bluetooth distance: 10 meters Three phone calls: support Charging time: 1.5 hours Earphone battery: 45mAh Charging box battery: 350mAh Talk time: approximately 4-5 hours Frequency range: 20HZ-20KHZ Earphone size: 2.18 * 1.68 * 1.3cm Charging box size: 4.9. * 3.8 * 2.5cm Product color: black/white/skin tone