Please kindly noted that this item is sold by GGuo from Joybuy marketplace. Features: 1. No delay chip, biological diaphragm speaker, Bluetooth 5.1 2. Voice assistant, silicon microphone noise reduction, cool lighting 3. Strong battery life, waterproof life, smart touch 4. Adopt silicon microphone noise reduction technology, strengthen the environmental noise, algorithm processing, effectively reduce the noise during the call, and make the call clearer 5. Support IPX6 waterproof, daily splashing will not cause damage to the headphones, no matter how fierce the "battlefield" is, there is nothing to fear specification: Headphone solution: Bluetooth 5.1 Product function: Bluetooth, call, music, single and double ear use Conventional color: black, variable red, blue, green Socket type: Type-C Headphone charging capacity: 40mAh Charging compartment battery capacity: 300mAh Bluetooth distance: 10m Use time: 3-4h Play mode: single and double ear use Package specifications: Headphone*1 Ears*2 Charging compartment*1 Charging cable*1 Manual *1 1. No delay chip, biological diaphragm speaker, Bluetooth 5.1 2. Voice assistant, silicon microphone noise reduction, cool lighting 3. Strong battery life, waterproof life, smart touch 4. Adopt silicon microphone noise reduction technology, strengthen the environmental noise, algorithm processing, effectively reduce the noise during the call, and make the call clearer 5. Support IPX6 waterproof, daily splashing will not cause damage to the headphones, no matter how fierce the "battlefield" is, there is nothing to fear