Microphone type: condenser Pointing characteristics: omni-directional/no-pointing Channel: 2.1 Input voltage: 220V Bluetooth protocol: wireless transmission Whether to support APP: Yes Color: Black Type-C (rechargeable) one for one, black Apple (rechargeable) one for one, black Type-C+ Apple [chargeable] one for two, black Type-C [chargeable] one for two Bluetooth version: wireless transmission Shell process: injection molding Built-in battery capacity: 300 mA-500 mA Battery life: 8-12 hours Signal to noise ratio: ≥95dB Frequency response range: 30Hz-15kHz