| Model number | HK9 ULTRA 2 |
| Screen | 2.01 inch-square 410*494-AMOLED |
| Waterproof | IP67 |
| Battery | 420 mAh |
| Normal use | 5-7 days |
| Material | Body: Zinc alloy+ABS; Strap: Silicon |
| APP | Wearfit pro |
| Bluetooth Version | BT5.2 |
| Compatible System | IOS 10.0 and above, Android 5.0 and above |


We are a professional manufacturer engaged in the research, development, production, and sales of high-quality electronics, including earphones and smart wearable devices. Our focus is on delivering inspiring product designs and an impressive user experience. To exceed user expectations, we use the best materials, hardware, and innovative software to create high-value products.
We have successfully provided OEM & ODM services for more than 200 foreign dealers across more than 80 countries and regions, including the USA, Canada, UK, Germany, and more. Our production facilities are ISO9001 certified, and our products hold CE, FCC, and RoHS certifications. With 4,000 square meters of production workshops, we utilize advanced machinery for assembling and testing to ensure top-tier quality.