Material: TPE soft rubber + rubber feel paint Bluetooth version: 4.1 Specifications: 4.5*4.0*1.0cm Chip: CSR8615 Charging time: about 2 hours Standby time: about 20 days Talk time: about 10 hours Music time: about 8 hours Operating range: within 10 meters Noise reduction: CVC6.0 Left and right wearing: 270° rotating Color: Black
