<br><b>Note: Please charge the earbuds before it is used for the first time</b><br><br> <br><b>Product Features: </b> Battery: Polymer Lithium Battery Bluetooth <br>Version: 5.0 Operation <br>Range: 10 Meters Weight of Single <br>Earbud: 5g/0.18oz Mobile Power Supply Charger <br>Capacity: Polymer Lithium Battery DC Charging <br>Voltage: DC5V DC <br>Charge Current (MAX): 250 mAh v <br>Weight: 0.17kg / 5.92oz <br>Earbuds' Size: 0.59in x 0.74in x 0.98in <br><br> <br><b>Warm Tip</b> <br>✘Please store and use this product at room temperature. <br>✘Do not expose this product to rain or wet environment; <br>✘Do not throw, avoid product damage due to fall; <br>✘Please do not disassemble yourself. Repair and modify this product; <br>✘Products built-in lithium-ion batteries, do not discard or put into the fire at will, so as not to cause danger! <br>✘In order to extend your headphone life and your physical and mental health, please do not listen in a long and loud environment, so as not to damage your hearing. <br>✘Shut down immediately in case of failure to prevent damage to speakers and other components. <br>✘Insufficient power will affect Bluetooth distance or Bluetooth easy to disconnect, please charge in time.<br><br>