new product K7 professional swimming earphone bluetooth wireless earphone sports earphone bone conduction earphone bluetooth5.0

Color: Meteorite (spot) / sapphire blue (spot) / blue (custom) / green (custom) / red (custom)
(Wholesale purchase, large quantity favorably)

Waterproof level: ip68 for swimming and diving (recommendation should not exceed 2 hours per underwater use (24 hours calculation))

Packing list: anti-noise earplugs*1; product manual*1; silicone adjustment belt*1; data cable*1; host computer*1; special waterproof silicone plug*2; ergonomic waterproof earplugs*1.