Features:[BT 5.1 Technology]Adopting the most advanced BT 5.1 chip, the earbuds feature automatic pairing, faster transmission speed, more stable connection and lower power consumption.[Premium Sound Quality]Graphene composite diaphragm features fast response and high fidelity, offering 9D surround sound quality as well as binaural HD call.[Smart Touch-Control]A variety of complex functions can be done easily with just one-touch, such as summoning voice assistant, controlling volume or music play and so on.[Large Capacity Battery]High capacity charging compartment provides long battery life after a single full charge. Designed in compact size, it is lightweight and portable.[LED-Digital Display]LED-digital screen shows clearly the battery charging status and remaining power, which you can see at a glance.[Considerate Design]Two earphones can be connected with two devices separately. Waterproof and sweat-proof functions enable you to enjoy sports more freely.[Universal Compatibility]Widely compatible with mobile phones, tablets and any other device with BT function.Specifications:Model: True Wireless Stereo-100Material: ABSColor: Black / White (Optional)BT Version: 5.1Earphone Battery: 3.7V / 40mAhCharging Box Battery:3.7V / 400mAhBattery Life: 3-4HCharging Case Charging Time: 1HInput / Output: 5V / 1ABT Protocol: HFP / A2DP / HSP / AVRCP / SPPTransmission Distance: about 10mFrequency Response: 40Hz - 20KHzItem Size: 60 * 26mmItem Weight: 7g / 0.25ozPackage Size: 12.7 * 8.1 * 3.7cm / 5 * 3.19 * 1.46inPackage Weight: 64g / 2.26ozNote:* Do not treat the product with violence, nor squeeze with heavy objects. And keep it away from high temperature and humidity environment.* Keep away from Wi-Fi, routers and other high frequency transmission devices, which will affect the signal reception of this machine.* Use this product in an effective environment (10m) without physical obstruction (e.g.walls) between the BT device and the headset.Package List:1 * BT Earphones1 * Charging Box1 * Charging Cable4 * Earplug Silicone Caps1 * User Manual