Product parameters:
Bluetooth specification: V4.0
Frequency range: 2400.0-2483.5MHz
Bluetooth mode, headset, hands-free device, A2DP and AVRCP
Bluetooth chip: CSR8635
Transmission distance: 10 meters
Talking time: 7 hours or more
Charging time: 1-3 hours
Playing time: 8 hours or more
Standby time: 250 hours or more
Weight: 18 grams

• Perfect workout headphones that are snug and secure so the headphones stay put while running, biking or at the gym.
• Bluetooth: V4.1, the signal strength is nearly twice times than the general Bluetooth headset in the market, High-fidelity stereo music and clear speech
• Pure Sound In-ear: With functional user interface, ergonomic earbuds design, sweat-proof, and a 10-meter working distance, our bluetooth headphones offering hours of pure enjoyment through a variety of activities.
• Universal Device Compatibility: Compatible with most bluetooth-enabled devices & apps. An innovative one-to-two technology allowing the headphones to connect two devices at the same time.
• Simple to Use: Control all functions of music (volume, sound, song selection) and calls the last dial number from phone on the headphones directly.For All Bluetooth Devices Including iPhone 7, iPad, iPod & Samsung Galaxy S7

Perfect workout headphones that are snug and secure so the headphones stay put while running, biking or at the gym.Yomanic