Razer Hammerhead True Wireless Earbuds (RZ12-02970500-R3M1) - Frequency Response: 20 Hz - 20 KHz, Impedance: 32 Ohm (1 kHz), Input Power: 8 mW, Compatibility: Devices with Bluetooth connections Smartphone app available for Android 8.0 Oreo and iOS 11 (or higher), Connector: Bluetooth, Color: Mercury