What's in the box:

K2 Smart Sunglasses Wireless BT5.0 Stereo Headset Hands-Free Calling Music Audio Sunglasses Voice Control Polarized sunglasses (Standard)

Features:
Clear and Natural View: The polarized lens is a lens made according to the principle of polarization of light. It is used to remove and filter out the direct light in the beam, so that the field of view is clear and natural.
Sound directional transmission technology: The unique cavity frequency division technology can accurately project the sound to a specific area.
Ultra-light Frame Material: It has a memory polymer material. The more it fits, the more it fits the user's head curve, and the comfortable clamping force can effectively reduce the head pressure.
Amplifier BT Chip: Support BT 5.0 protocol, four times the transmission distance of BT 4.2, double the transmission speed; support Apt-X HD high quality audio.
With built-in 90mAh Polymer Battery: It offers up to 4 hours of continuous music and 3 hours of talking time, ensure you long lasting using time. easy control answering / ending calls, playing / pausing, previous / next songs.

Specification:
Name: Smart Sunglasses
Material: polymer
Weight: 32g(including lens)
Colour: Black
Chipset: ATS300x
Speaker: 1609
Battery Type: Lithium polymer
Capacity: 90mAh
Compatible system: IOS, Android
Charging method: USB
Charging time: About 1 hour
Call time: About 5 hours
Music time: About 4 hours
Standby time: About a week
Product language: Chinese/English
Product size: 19*8.5*7.5cm
Product weight: 150g

Package List:
1 * USB Cable
1 * Smart Sunglasses