With a 40mm driver, the P47 Wireless Headphone outputs stereo audio through Bluetooth, FM, or TF card modes. A 250mAh battery maintains a 15-18 hour standby state. This version transitions to Bluetooth 4.2 with EDR, which stabilizes the signal better than the previous 4.1 model.Key Features4-in-1 Playback: Supports BT, FM radio, TF cards, and 3.5mm AUX input. Bypasses phone dependency via the integrated SD card slot.Foldable Frame: Mechanical hinges rotate to reduce the total physical footprint. Occupies less space in bags during transit across Bangladesh.HD Microphone: Integrated hardware captures voice for hands-free mobile calls. Transmits speech clearly despite high humidity or road dust.Bluetooth 4.2 EDR: Enhanced Data Rate protocol improves wireless connection stability. Reduces audio drops within a 10-meter range.40mm Drivers: 88 dB signal-to-noise ratio with 90 dB/mW sensitivity. Maintains audio clarity at higher volumes without signal distortion.Frequently Asked QuestionsHow to connect P47 headphone to mobile?Hold the power button until the indicator flashes to enter pairing mode. Select the device name from your phone's Bluetooth menu to sync.Does P47 headphone support SD card?Yes, the side slot accepts TF cards for direct MP3 playback. This enables music listening without a Bluetooth connection or external player.