Colour:A2DC Connection Instruction: 1.Make sure that the device has charged in it; 2.Long press the middle button about 3-5 seconds until flash the red and blue light; 3.Make the Bluetooth function "ON" in your phone, and find the device named of “okcsc DD4”.   Specifications: Bluetooth Version: V5.0 Operation range: about 10 meters (without obstacle) Music Time: about 3-4 hours (depends on music volume & the frequency of switching song) Talk Time: about 4-6 hours Standby time: about 160 hours Charging Time: about 1h Cable weight: about 9g Cable length: about 71cm   Vol(+) Short press: Switch to the previous song Long press: Volume up Vol(-) Short press: Switch to the next song Long press: Volume down   Package List: 1 * Detachable Headphone Cable 1 * USB Cable 1 * Pair of Ear-hook 6 month warranty and lifetime technology supports   For all the A2DC jack like Audio-technica ATH-CKR100,ATH-CKR90,ATH-CKS1100, ATH-LS400,ATH-LS300, ATH-LS200,ATH-LS70,ATH-LS50,ATH-E40,ATH-E50,ATH-E70
