<ul><li><p>Built-in microphone, supports hands-free calling</p></li><li><p>Support TWS 1 + 1 series, stereo sound</p></li><li><p>Support card insertion and audio input</p></li><li><p>Handheld design, easy to carrying, portable for outdoor activities</p></li><li><p>Four color for option, meet different style need</p></li></ul><p><strong>Specification:</strong></p><ul><li><p>Bluetooth chip: Jerry AC6928B</p></li><li><p>Bluetooth version: V5.0</p></li><li><p>Bluetooth protocol: AVCTP 1.4, AVDTP1.0, AVRCP1.5, HFP1.5, GAVDP 1.0</p></li><li><p>Transmission distance: ≧ 10MM</p></li><li><p>Operating frequency: 2402MHz-2480MHz</p></li><li><p>Transmission power: classII Max + 4dBm</p></li><li><p>Modulation mode: GFSK DQPSK</p></li><li><p>Frequency response: 75Hz-20KHz</p></li><li><p>Distortion &lt;1%</p></li><li><p>S / N ratio ≧ 80%</p></li><li><p>Speaker: 100mm, 4Ω, 5W</p></li><li><p>Battery: 18650, 3.7V, 1200MA</p></li><li><p>Output power: 4W</p></li><li><p>Charging voltage: DC 5.0V +/- 0.25 1000mA</p></li><li><p>Working voltage: 3.7V (3.3-4.2)</p></li><li><p>Charging time: 3HR</p></li><li><p>Play time: 4HR</p></li><li><p>Static current: 10 UA</p></li><li><p>Standby time: 150 days</p></li><li><p>Size: 167 * 88 * 183MM</p></li><li><p>Weight: 640G</p></li></ul><p><strong>Compatible with:</strong></p><ul><li><p>Apple Samsung Huawei Xiaomi, etc. devices that support Bluetooth 5.0</p></li></ul>