Turn up the volume on your style and your tunes with these wireless earbuds from citizen. Bluetoothâ® v5. 0 allows you to connect to your smart phone with 10. 0mm copper ring speakers, these earbuds include music, call, voice assistant and call number functions enjoy 3-4 hours of music playing time or 4-5 hours of talk time, with a 120-hour standby time transmission distance: 10 meters wireless charging headphone battery: 35mah polymer battery charging compartment battery: 200mah polymer battery made of recycled ocean plastic, an environmentally friendly resource that upcycles marine plastic debris we are an authorized citizen dealer