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Feature

UV MONITORING PREVENT DAMAGE FROM SUNLIGHT - The intensity of UV light is monitored to give you helpful suggestions and remind you to protect yourself from sunlight.
LONG USAGE TIME PER FULL CHARGE - Standby time of 28 days and a charger which easily attaches, making it quicker and easier to use.
COLORFUL TPU STRAPS & COMFORTABLE SUPER LIGHTWEIGHT - 4 different colors (Black, Blue, Pink, White) with diamond-shaped pattern make it easy to match your daily life, a light weight of only 0.05 lbs (20g) can barely feel you are wearing it!
WATERPROOF - IP57 waterproof design makes use more convenivent and carefree.
Compatible with phones, supporting Android 4.4/iOS 7.0 or later and Bluetooth 4.1 or later.

Description

UV Monitoring to Prevent Damage from Sunlight
The intensity of UV light is monitored to give you helpful suggestions and remind you to protect yourself from sunlight.

Long Usage Time Per Full Charge
Standby time of 28 days and a charger which easily attaches, making it quicker and easier to use.

Colorful TPU Straps & Comfortable Super Lightweight
4 different colors (Black, Blue, Pink, White) with diamond-shaped pattern make it easy to match your daily life, a light weight of only 0.05 lbs (20g) can barely feel you are wearing it!

IP57 Waterproof
IP57 waterproof design makes use more convenivent and carefree.

Smart Recognition of Different Fitness Scenarios for A More Regular Lifestyle
Adopting self-learning algorithms to bring about smart recognition of different scenarios (walking, running, cycling, and sleep).

Smart Reminders so that You Don't Miss Anything Important
The indicator flashes for incoming calls and vibrates for reminders so that you don't miss anything important.

Specifications:
Dimensions: 9.65 x 0.79 x 0.29 inches
Item Weight: 0.05 lbs
Bluetooth chip: Dialog 14681 (Bluetooth 4.2)
Gravity sensor: Kionix KX124
UV sensor: LTR 390
Waterproof level: IP57
Materials: BASF martensite 17C4PH stainless steel surface, austenite 316L stainless steel frame, colorful TPU straps
Charging method: attachable charging mount
Battery: lithium ion polymer batteries (70 mAh)
Charging voltage: 5 V
Charging time: 2.5 h
Compatible devices: Android 4.4/iOS 7.0 or later smartphones supporting Bluetooth 4.1
Working temperature: -4H to 122H (-20 to +50)
Relative humidity: <95%

Bluetooth smart connection, supporting a 10 m wide coverage (for open environments)
Certified by BQB, SRRC, CE, FCC, and American CEC.

Please note: No heart rate function.