Feature: Can Connect Two Bluetooth Devices At The Same Time (One Pair Two); There Are Calls, Hang Up, Music Playback, Up And Down Selection, Volume Control, Voice Dialing, Redial Tail Number, Caller Number, Smart Voice Prompt, Power Display, Etc.Waterproof Advanced Digital Signal Processing (Dsp) Technology; Clearer Calls And More Stable Quality Support High Quality Music Playback On All Mobile Phones, High Standard Bass Performance Jieku's New Fashion Trend Subwoofer Bluetooth Sports Headphones, The Old Flat Sound Cavity Is Changed Into A Curved Sound Cavity, So That The Tone Can Better Resonate, So That Each High And Low Part Is Shocked And Released Pressure Specification: Bluetooth Version 4.1. Support For Voice Calls. Support Bluetooth Headset To Play Music. Support Music Editing Songs. Support For Redialing The Last Number. Caller Voice Reporting. The Bluetooth Headset Operates A Voice Prompt. Support One-To-Two Function. Support, Car Navigation, Voice And Other Software. The Battery Capacity Is 100 Mah. SpecificationDimensions And Weight Product Weight: 0.0500 Kg Package Weight: 0.0580 Kg Product Size (L X W X H): 15.00 X 8.00 X 3.00 Cm / 5.91 X 3.15 X 1.18 Inches Package Size (L X W X H): 10.50 X 8.50 X 4.00 Cm / 4.13 X 3.35 X 1.57 Inches Package Contents Package Contents: 1 X Pair Of Earphones