Brand: Hoco Model/PN: 6931474766250 Type: Bluetooth Headset Interface : Type C, TF Card Mode Headphone Connectivity Technology: Bluetooth, 3.5mm Jack Headphone Type: Over-Ear Microphone: Yes Driver/Speaker Diameter: 40 mm Frequency: 20 - 20 000 Hz Battery Description: 400mah Charging Time: Up to 2 hours Battery Life: Up to 40 hours Stand-by: up to 200 hours Color: Silver Dimensions (Height x Width x Depth): 193 x 170 x 76 mm Weight: 193 g Warranty For Individual Customer: 24