levelone CHSPBTNFCSPKB Bluetooth Stereo NFC Headset Instruction Manual
levelone CHSPBTNFCSPKB Bluetooth Stereo NFC Headset Product Information Specifications Battery capacity (Wh): Battery voltage: DC 3.7V Audio power in RMS (watt): Bluetooth version: 3.0 Built-in microphone: Yes Frequency band: 2.4GHz Frequency response: 90Hz-18kHz Signal-to-noise ratio: ?70db Product weight (kg): Features: Rechargeable battery, NFC pairing, Speaker … Read more