With the BNA2 smart wireless earphones, free yourself from any restriction and start living your most active, authentic life. The BNA2 earphones are perfect for all activities. With its Auto On/Off technology, securely designed ear tips, maintain full awareness while you jam out! Waterproof Standard: IPX-5Bluetooth Version: V5.0 JieLi SolutionWireless Range: Up to 10mTalk Time: Up to 9hMusic Playback Time: Up to 9h(varies by volume level and audio content)Standby Time: Up to 150hDimension of Each Earbud: 20.5 x 18 x 25.7mmDimension of Charging Case: 62 x 31 x 30.5mmWeight of Two Earbuds: 8gWeight of Charging Case: 25.8g