Stylish Android Square Smartwatch With Breathing Training And Music Control

Description
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Model name: HK80
Size: 52x39x10.4mm
Weight: 40g
Color: black, pink, silver
Main features:
Bluetooth call, voice control, message screen constant light, NFC, breathing training, calendar, payment code, smart Island, calculator, password unlock, custom dial, weather forecast, music control, step counting, heart rate, sleep, sedentary, mileage, blood oxygen, blood pressure, search, calories, message push
Chipset Supplier: BLUETRUM
Chipset: AB5681G
APP: FitCloudPro
Compatible System: Android4.4 or IOS10.0 above
FLASH memory: RAM:184KB ROM:128Mb
Screen type: 1.95inch AMOLED
Resolution: 410*502
WIFI: N/A
G-Sensor: STK8321-w
Heart Rate: HX3918
Battery: Lithium polymer 300mAh
Charging Method: Magnetic charging
Language: Multi-language
Functions:
Massive dial download, sports push, game push, upload photos, step counting, heart rate, sleep, sedentary, mileage, blood oxygen, blood pressure, mobile phone search, calories, Bluetooth, information, wechat, QQ push,Search function, alarm clock setting, water reminder, gesture intelligent control, do not disturb mode, reminder mode,Phone, SMS, wechat, QQ, Facebook, twitter, instagram, Skype, WhatsApp, line, kakao talk
Charging time: 2H
Life time: Use for 7-10days, standby for 40 days

Rainbuvvy is a vertically integrated smartwatch innovator based in China, operating both as the manufacturer behind global wearable brands and the creator of our own international smartwatch brand Rainbuvvy. With a dedicated team of 45+ engineers and industry specialists, we deliver OEM/ODM solutions, private label customization, and wholesale distribution for partners worldwide.

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Why Partner With Us?

Dual-Core Expertise
As both a brand owner and manufacturer, we understand market trends from dual perspectives:
Rainbuvvy Brand: Available on Amazon, eBay, Walmart.com, and regional e-commerce platforms across North America, Europe, and APAC.
B2B Solutions: 7+ years in R&D and bulk production of smartwatches with IP68/CE/FCC certifications.

Agile Customization
Negotiableunits for white-label orders with 45-day rapid turnaround
- Customizable hardware (watch faces, straps) & software (UI, health algorithms)
- Pre-loaded multi-language support for global markets

End-to-End Control
Ownership of the entire supply chain – from PCB design, mold development to quality assurance – ensures 30% faster prototyping and zero supply chain bottlenecks.

Data-Driven Innovation
Our Shenzhen-based lab continuously upgrades features based on 1.2M+ user data points collected from Rainbuvvy consumers, keeping your products ahead in:
▸ Health monitoring accuracy (heart rate, SpO2, sleep)
▸ Sports mode optimization (100+ activity profiles)
▸ Battery efficiency (up to 15 days per charge)

Global Footprint
• 20,000㎡ production facility with annual output of 800K+ units
• Serving 50+ distributors and brands across US, Germany, UAE, and Australia
• Warehouses in Los Angeles and Hamburg for faster regional delivery

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Your Next Step
Whether you're a startup seeking small-batch customization or an established retailer needing bulk supply, Rainbuvvy becomes your wearable tech arm.