HiFuture ColorBuds Bluetooth True Wireless Handsfree White Techical Specifications: Bluetooth version: Bluetooth V5.3 Connection range: 10 meters (Free Space) Speaker diameter: 10mm, N42 Neodym Speaker impedance: 32Ω Speaker Rate Power: 3mW Playback time: 4H 16H with Charging Case Earbud battery capacity: 40mAh x2 Earbuds Case battery capacity: 300mAh Li Polymer Charging case Charging port: Type-C Case dimensions: 48.15 x 52.85 x 24.14 mm Color: White