General Features: Color: Black Ultra-Small Comfort & Ease 4 Hours Playtime + 4 Hours With On-The-Go Charging Clip (8 Hours In Your Pocket) Sweat-Proof & Water Resistant Customize Your Sound With The Jaybird App Secure + Comfort-Fit With Interchangeable Tip/Fin + SpeedFit Cord Management Clips Music + Calls Multipoint To Pair And Connect With Two Different Bluetooth Devices Inline Controls For Music: + Button: Volume+ / Skip Forward Power Button: Play/Pause / Voice Commands - Button: Volume - / Skip Backward Inline Controls For Calls: + Button: Switch A Call Power Button: Accept, Decline, Redial - Button: Mute / Unmute Specifications: Bluetooth Version 4.1, Multipoint Codec: AAC, SBC, Modified SBC Profile: Handsfree, Headset, A2DP, AVCRP, SPP Effective Range: 10 Meters (30 Feet) Play Time: 4 Hrs + Additional 4 Hrs With Bluetooth Headset: 5.0V, 0.5A Charging Time: 2.5 Hrs Quick Charge: 20 Min = 1 Hr Play Time