- Omnidirectional electret microphone，ENC noise reduction-2. Receiver audio plug: Lightning-3. Compatible with Lightning interface phones and tablets, supporting system upgrades-4. Battery capacity: 80mAh; Charging time: 2-3 hours-5. Usage time: 5-6 hours-6. Material: ABS; Size: Microphone 30 * 30 * 21mm/Receiver 32 * 25 * 9mm; Weight: Microphone 12.6g/Receiver approximately 3.3g