Descrption: Weight:(Body) about 4.2 grams per ear (Case) about 25 grams Size:(Body) 20.9 mm x 27.9 mm x 14.1 mm (Case) 37.3mm x 66mm x 21.2mm Battery Method:Lithium-ion battery (30 MAH) Continuous Play Time:6 hours plus 24 hours in charging case Communication Method:Bluetooth Ver5.3. Distance from paired smartphone:About 10 meters Waterproof Performance: IPX5 charging case is non-waterproof List of products: USB Type-C cable instruction manual