Thank you for your interest in Huawei wearables. The IP rating is a standardized measurement of a product's protection against liquids and solid particles. The first number refers to protection against dust and solid particles, ranging from 0 to 6; IP69K and IP68 indicate the same excellent dust resistance. The second number "9K" and "8" refer to different test methods for water resistance. IPX9K involves high-pressure liquid splashes, whereas IPX8 involves short-term immersion in 1.5 meter-deep water. This means that IP68-rated products can be worn during shallow water activities, such as swimming in a pool or along the coast; products that have obtained both the IP68 and IP69K ratings can also be worn during activities involving fast-flowing water, such as platform dives, ordinary dives into water, water skiing, surfing, motorized water sports (such as speedboats and motorboats), car washing, and rafting. Thank you for your interest and support.
Here's a brief overview of the different testing conditions:
IP69K: Complies with the IP69K rating under the ISO 20653:2023 standard. The IPX9K test conditions are as follows: water temperature: 80±5°C; water flow: 15±1 L/min; water pressure: 10,000±500 kPa; spray angle: 0°, 30°, 60°, and 90°, 30 seconds for each angle.
IP68: Complies with the IP68 rating as defined in the GB/T 4208-2017 standard. IPX8 indicates that the product can be immersed in up to 1.5 meter-deep water for 30 minutes without being affected, given a normal temperature range and normal atmospheric pressure.