4G GPS Kids Smart Watch – Video Call, SOS & IP67 Waterproof

4G GPS Kids Smart Watch LT21 – Video Call, SOS, WIFI & IP67 Waterproof

Give your child a safe, connected, and fun wrist companion. The LT21 Kids Smart Watch combines 4G connectivity, real-time GPS tracking, two-way video calling, and an SOS alert button — all wrapped in a durable, IP67-rated waterproof case with a food-grade silicone strap. Whether your child is at school, at the park, or visiting a friend, you can stay in touch with ease and know exactly where they are at all times.

Made in Mainland China.

Key Features

• Triple-Mode Location Tracking: GPS + WIFI + LBS positioning for highly accurate, real-time location updates via the Setracker app.
• 4G Video & Voice Calls: Make and receive crystal-clear video calls and voice calls directly from the watch — WeChat video calling supported.
• SOS Emergency Button: One-press SOS instantly alerts pre-set contacts for fast response when it matters most.
• IP67 Waterproof Rating: Splash- and rain-resistant for everyday adventures. (Not suitable for hot/salt water, hot showers, swimming, or diving.)
• 1.4-Inch IPS HD Touch Screen: Vivid 240×240 square IPS display with a scratch-resistant, drop-resistant, explosion-proof finish.
• Built-in Camera: 0.3 MP rear camera lets kids snap photos and take short videos.
• Voice Monitor (Remote Listen-In): Parents can remotely activate the watch microphone to monitor surroundings discreetly.
• 650 mAh Lithium Battery: Reliable all-day battery life for active kids.
• MediaTek 8521E Processor | 2 GB RAM + 4 GB ROM (units may ship as 1 GB + 8 GB — both versions are equivalent in everyday use).
• Food-Grade Silicone Strap: Soft, anti-static, dust-proof, and sweat-resistant — gentle on young skin all day.
• Step Counter (Pedometer): Tracks daily steps to encourage active, healthy habits.
• Multi-Language Support: English, Russian, Spanish, French, German, Italian, Portuguese, Arabic, Hebrew, Dutch, Polish, Turkish, Ukrainian, Indonesian, and many more.
• Global 4G Compatibility: Works worldwide (outside Mainland China) with a compatible 4G SIM card. Supports FDD-LTE (B1/B2/B3/B4/B5/B7/B8/B12/B20/B28A), WCDMA (B1/B2/B5/B8), GSM (B2/B3/B5/B8).
• CE Certified — meets international quality and safety standards.

Technical Specifications

What's in the Box

• 1× Kids Smart Watch (SIM card not included)
• 1× USB Charging Cable
• 1× English Instruction Manual
• 1× Original Box

Important Notes

• Always power off the watch before inserting or removing the SIM card. Remove any PIN code from the SIM card before use.
• Purchase a 4G SIM card from your local carrier with an active data plan.
• Charge using a 5V 2A adapter.
• The global version does not include a weather function.
• Not designed for hot/salt water, hot showers, swimming, or diving despite the IP67 rating.

For guidance on keeping children safe online and with connected devices, visit the FTC's COPPA guidance for connected devices.

Frequently Asked Questions

Q: Does the LT21 kids smart watch require a SIM card to work?

A: Yes, a 4G-compatible nano SIM card with an active data plan is required for calling, video calls, and GPS location tracking over the cellular network. WIFI-based features and location can still function without a SIM card when connected to a WIFI network. The SIM card is not included in the package.

Q: Which app do I use to track my child's location?

A: The watch uses the Setracker app, available for both Android and iOS. Once set up, parents can view real-time GPS location, receive SOS alerts, make calls, and activate the voice monitor directly from their smartphone.

Q: Is the LT21 kids smart watch truly waterproof?

A: The watch holds an IP67 waterproof rating, meaning it can handle everyday splashes and light rain. However, it is not designed for swimming, diving, hot showers, or exposure to hot or salt water. Please keep use within the IP67 rating to maintain the device's integrity.

Q: What countries is this smart watch compatible with?

A: The LT21 is a global version compatible with most countries outside of Mainland China, provided you have a local 4G SIM card that matches the supported network bands (FDD-LTE B1/B2/B3/B4/B5/B7/B8/B12/B20/B28A or TDD-LTE B38/B39/B40/B41). When logging into the Setracker app, be sure to select the correct server region for your country.

Q: Can I make video calls on this kids smartwatch?

A: Yes! The LT21 supports two-way video calls over 4G LTE and WIFI, including WeChat video calling. Parents and children can see and hear each other clearly using the built-in camera and speaker.