Upgraded Features: 

• Battery is increased to provide up to 8 hours working time and up to 250 hours of standby with a single charge
• Circuit design makes it more comfortable and stable to wear.
• Upgrade to IPX7 hydroponic waterproof nano coating. Stand up to heavy rains or sweat throughout incense exercise. 
• High fidelity stereo sound. Offer incredible sound quality with HIFI bass and crystal clear volume.
• Long distance operation ups to 10 m (33 feet) distance.
• Add bonus items: 3 pairs of Ear tips (small, medium, large)for EVA case.

Technical Specifications: 

• Model: U8I
• IWaterproof rate: IPX7
• Operating Range: Up to 33 feet/10 meters (No obstacle between)
• Standby time: 250 hrs
• Charging time: 1-2 Hours via Micro-USB cable
• Talk/Playing time: about 6-8 hrs
• Battery Capacity: 100mAh/3.7V, Rechargeable Lithium-Ion
• Earphone Type: In Ear / Ear Hook
• Microphone: Built-in
• Noise Reduction: CVC6.0 Digital Noise Canceling Technology

What is in the package: 

• headphone x 1
• Eartips x 3 pairs (large, medium ,small) 
• Micro USB cable x 1
• User manual x 1

Moffo Friendly Customer Service:

- We provide 7*24H email reply and 90 days replacement, if you have any quality problem, please feel free to contact us.