Will you worry about your Bluetooth headphone being no electricity? That is not unusual we often forget to charge the Bluetooth headset. This universal mic piston is a perfect substitute when going out.It supports answering the phone calls￡?so you don't have to pick up your cellphone for a long time when you are talking to your friends. We try our best to use strong materials in the areas where people often overlook. Addition of high magnetic circuit and a thin diaphragm￡? the product quality has been well improved. We use good materials to guarantee the perfect quality of products. It's a bargain of super value! <br><br>Features: <br>Optimized cavity design￡? with high sensitivity and standard impedance￡? it offers more stable audio transmission performance. <br>Ergonomic design￡?comfortable to wear. <br>Durable noodles-line design￡? reduce earphone winding. <br>Compatible with most 3.5 mm jack electronic devices. <br>Light weight￡? convenient to take along and use. <br><br>Specification: <br>Color: Black + Red <br>Cable length: 1.2 m / 3.9 ft <br>Earphone sensitivity: 110 dB <br>Frequency range: 18-20 kHz <br>Speaker impedence: 32 ohms <br>Earphone weight: 18 g / 0.3 oz <br>Package size: Approx. 14.6 * 10 * 1 cm / 5.7 * 3.9 * 0.4 in <br>Package weight: Approx. 20 g / 0.67 oz <br>? <br>Package including: ? <br>1 * Earphone <br>2 * Earbud