Features: 1. HIGH TECH DESIGN Adopt 5.0 high version bluetooth chip. Faster transfer speed and more stable connection. With the push of one button you can pause and play, control the volume, activate Siri and more! 2. AUTO PAIRING The earbuds will sync and pair your phone every time you pick them out of the smart box after pairing them when you first use them. By placing them back to the box, they will automatically power off and recharge after each use. 3. COMFORTABLE The earphones have an ergonomic design that will perfectly fit your ear for great comfort and they will stay in place without falling off for perfect results. With 3 different sizes of ear caps. You can choose according to the size of your ear. 4. IPX4 Waterproof Do not fear sweat when you work or sport. 5. LONGER PLAY TIME & PORTABLE CHARGING About 6 hours music time by 1.5 hour quick charge. Portable 650mAh mini charging dock supports 6 times recharging. Specification: bluetooth: V5.0 Wireless Transmission Distance: 10 meters (Open space) Power Input: DC 5V Working Voltage: 3.7V Built-in Microphone: Yes Noise Reduction: Yes Earphones Battery: 60mAh Charging Box Battery: 650mAh (Can charge headphones 6 times) Charging Time: About 1.5 hours Music Time: 6 hours for dual headphones Standby Time: Up to 150 hours Single Headphones: 5.0g Waterproof: IPX4 Package Included: 2* TWS bluetooth Earbuds 1* Charging Box 3* Pairs of Ear Tips 1* Charging Cable 1* User Manual