M23 Wireless Bluetooth Ear In-Ear Binaural 5.1 Sports In-Ear HeadphonesFeatures:This bluetooth earbuds adopt V5.1 fast connection technology,stable and efficient transmission, provides you sound quality and uninterrupted call experience SAU HD sound quality decoding,increase the number of wrinkles on the diaphragm,more compatible and reduces distortion One Key start Voice Assistant,free your hand,comfortable to wear without pain with long time control function:you can play with one operation on the headset,perfect for outdoor,home office and sports Level 7 waterproof and sweatproof, perfect for sports, gymProduct Description:Transmission range:10 metersBluetooth protocol:5.1Channel:stereoHow to use:earplug styleWhether single or double ear:bilateral stereoEarplug battery capacity:60mAhCharging box battery capacity:2000mAhWorking hours:220HStandby time:12HWaterproof rating:IPX7Material:PlasticSize8x5x3.5cmPackage Includes:1 Piece Earphone1 Piece Charging Compartment1 Piece Charging Cable1 Piece ManualNote:1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.