Product size: Dimension (WHD): 70*26.5*49.5mm Weight (g): 43 Packaging size: Dimension: 100*100*38mm Weight (G.W): 147 WEEE Properties: WEEE weight (g): 43 Card weight (g): 72 Paper weight (g): 27 Plastic weight (g): 2 Battery: Polymer Li-on Specification: Bluetooth version: 5.0 Frequency range: 2.4 - 2.48GHz Transmission distance: Up to 10m Playing time: Up to 6 hrs Box capacity: 350mAh Charging time for earbuds: approx 1.5 hrs Charging time for box: approx. 1.5 hrs Standby time: Up to 180 hrs