Compatible with most Bluetooth-enabled devices. Bluetooth version: Bluetooth v4.1 + EDR Standby Time: 100h about Comes with portable power bank, built-in 500mAh rechargeable li-ion battery, can provide charge for headset anytime; Charging time is about 3 times. Package Include: 2X Bluetooth Headset 1X Charger Dock 1X User Manual 1X Charging Cable

• Invisible in Ear Ultra-Small Sports Wireless Bluetooth 4.1 Stereo Headset Mini Earphone Earpiece Earbud Headphone with Microphone Hands-free Calling.
• The Newest bluetooth 4.1 headset with lightweight and compact portable design. Simple and Stylish.
• Support multipoint connections, Can connect two mobile phones at the same time and ready to answer the incoming call of one phone any time.
• Up to 4 hours of continuous talk time. the wireless range up to 10 meters.it offers you the wireless freedom, and it gives you the most comfortable wearing experience.

Invisible in Ear Ultra-Small Sports Wireless Bluetooth 4.1 Stereo Headset Mini Earphone Earpiece Earbud Headphone with Microphone Hands-free Calling.Sonny DAG