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KC (Korea Certification) marking is mandatory for wearable devices sold in South Korea, covering safety, electromagnetic compatibility, and radio equipment requirements. This guide provides a comprehensive overview of the KC certification pathway for wearable devices, helping manufacturers navigate the Korean market entry process efficiently.

KC Certification Regulatory Framework for Wearables

Wearable devices entering the Korean market must comply with multiple KC certification requirements depending on product characteristics:

• KC Safety (KCs mark):Electrical safety under the Electrical Appliances and Household Products Safety Control Act. Applicable to wearable devices with lithium batteries

• KC EMC (KCC mark):Electromagnetic compatibility under the Radio Waves Act. Required for all electronic devices

• KC Radio (KCC mark):Radio equipment certification for devices with wireless transmitters. Required for Bluetooth/Wi-Fi wearables

A smart watch with Bluetooth and Wi-Fi must obtain all three certifications. Products are registered with the National Radio Research Agency (RRA) under the Ministry of Science and ICT.

Safety Certification — Battery and Electrical Requirements

KC safety certification for wearable devices focuses heavily on battery safety, following the Korean standard KS C IEC 62133-2 (adopted from IEC 62133-2 with Korean national differences):

• Cell-level safety tests: overcharge, external short circuit, thermal abuse, nail penetration, crush, impact

• Battery pack protection: overcharge protection, over-discharge protection, overcurrent protection, temperature protection

• Electrical safety: KS C IEC 62368-1 compliance for the wearable device enclosure and charging system

• Korean national difference: Additional requirements for battery labeling in Korean and specific thermal test conditions

Radio Equipment Certification — SAR and RF Requirements

Wearable devices with wireless transmitters must meet Korean radio equipment requirements under the Radio Waves Act:

RF Parameters

• BLE (2.4GHz): Frequency tolerance, spurious emissions, EIRP per RRA Notice

• Wi-Fi (2.4GHz/5GHz): DFS testing for 5GHz, conducted and radiated emissions

SAR Requirements

Korea follows ICNIRP guidelines for SAR limits. For wrist-worn wearable devices:

• Extremity SAR limit: 4.0 W/kg (1g averaging)

• Body-worn SAR limit: 1.6 W/kg (1g averaging) — applicable for devices worn closer to the torso

• SAR exemption: Low-power devices with output ≤20mW may qualify for SAR test exemption per RRA guidelines

KC Certification Process and Foreign Manufacturer Requirements

The KC certification process for wearable devices involves the following steps:

1. ①Appoint a Korean local representative:Foreign manufacturers must designate a Korea-based representative (importer or agent) who will be the certificate holder

1. ②Submit application and samples:Apply through the Korean representative to a designated testing/certification body

1. ③Testing at designated laboratory:Safety (KTL, KTC, or other designated labs), EMC, and radio testing at RRA-designated facilities

1. ④Factory inspection (safety certification):Initial factory inspection is required for KC safety certification

1. ⑤Certificate issuance:Upon successful testing and factory inspection, KC certificates are issued and the product is registered with RRA

Total timeline ranges from 10-16 weeks, depending on testing complexity and factory inspection scheduling. Working with an experienced partner like GTG Group can help streamline the process and coordinate between safety, EMC, and radio certification tracks.

Leveraging CB Certification for KC Market Entry

Manufacturers who already hold IEC 62133-2 CB certification for their wearable device batteries can leverage the CB report to accelerate KC certification:

• CB test reports are accepted by Korean designated laboratories as a basis for KC safety certification

• Korean national differences must still be evaluated and tested (additional testing is typically limited)

• CB certification does not cover radio equipment requirements — separate KC radio certification is always required

Planning CB certification with Korean national differences included from the start can save 2-3 weeks in the KC conversion process.

This article is AI-assisted and for reference only. It does not constitute any certification commitment or legal advice. Please refer to the latest official regulations.

Contact: 18826804895 | net01@gtggroup.com