Brand Xiaomi Reference 3366 Data sheet Connectivity: Bluetooth v5.2, USB-C charging box Other features: Integrated microphone, IP54 certification Operating system: iOS, Android, Windows Dimensions: Charging case: 60 x 46 x 23.7mm, earbud: 24.5 x 16.7 x 24.6mm Weight: 4.2g (headphones), 36g (with case) Battery: up to 5 hours (headphones), 18 hours (with box) Material: ABS Charging time approx. 3 hours (case), approx. 1.5 hours (headphones) Color Black Group 2419