Parameters:
Comply with Bluetooth protocol V4.1
Frequency: 2.4GHz ISM band
Full Bluetooth RF interface and lower link controller functions
Transmission maximum range: 10 meters
Continuous talking time: 3 - 5 hours
Audio code: 15bit resolution
S / N: more than 60dB
Standby time: 7 - 10 days
Operation temperature: -10 - 55 Deg.C

Note:
The film covers protect sunglasses from the dirty, you have to tear it down before you wear the glasses.
Gender: Men,Women
Package weight: 0.177 kg
Product Size(L x W x H): 14.50 x 6.50 x 4.00 cm / 5.71 x 2.56 x 1.57 inches
Package Size(L x W x H): 17.00 x 7.50 x 5.00 cm / 6.69 x 2.95 x 1.97 inches
Package Contents: 1 x Bluetooth Sunglass, 1 x Portable Case, 1 x Cleaning Cloth, 1 x Sports Sling, 1 x USB Cable, 1 x Pouch, 1 x Polarized Light Test Card, 1 x English and Chinese Manual

• Top grade sunglasses formed the main body supporting handset and handsfree profile
• Fashionable design with foldable eyeglasses and telephone talking mode when calling in and out, perfect combination of practicability and fashion
• Stylish appearance, unique design, personality development features, Made of polarized lenses with function of anti-rays, no glare and good eye health care
• Hi-Fi earphones built directly onto the frame and can be adjusted 270 degree for comfortable fit
• It can work with all Bluetooth mobile phones, you can enjoy hands-free talk with your friends

Top grade sunglasses formed the main body supporting handset and handsfree profileFANLI