This lightweight in-ear earbuds design is a perfect fit for sports, without compromising in-ear comfort. The neckband design is nice and comfortable to wear. Able to play stereo music on smartphone and answer the phone. Music switching and volume adjustment are available.

• Simple Pairing and One-key Answer,
• Automatically pairs with the closest Bluetooth-enabled device
• Dual Connections. Pair with 2 phones simultaneously 
• HD Sound Quality Rich Stereo Microphone/Listening Sound 
• Ideal for Exercise, Running, Climbing, Driving, Skating, Camping, Fishing and other Outdoor Sports.
  

• Weight: 12g
  
• Bluetooth version: 4.2
• Wireless operation range: 10m (without obstacles)
  
• Charging means: Micro USB Cable
  
• Battery: 180mAh
• Input Voltage/ Current: 5V / 100 Ma
• Talk time: up to 12 hours
  
• Playing time: up to 12 hours
  
• Standby time: up to 420 hours
  
• Charging time: about 2hours