Packing list: 
<br />1 x E26 Sports Smart Wristband
<br />1 x USB Chargingn Cable
<br />1 x English and Chinese Manual
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<br />E26 0.86 inch Touch OLED Bluetooth 4.0 Heart Rate Blood Pressure Blood Oxygen Sleep Monitor Tracker Sports Waterproof Smart Bracelet Wristband 
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<br />Description:
<br />- This E26 Smart Bracelet is for Android 4.4 / iOS 8.0 and Bluetooth 4.0 above systems.
<br />- Real time heart rate monitoring, 24 hours automatic monitoring. 
<br />- Blood pressure function, real-time monitoring, App check your blood pressure at any time.
<br />- Real time blood oxygen monitoring.
<br />- IP67 waterproof and dustproof level, not only can protect the daily life of particles, dust, sweat and other substances, can also be washed directly with water, shallow swimming can be worn directly.
<br />- Precise sleep monitoring. Lightweight skin texture, you will completely not feel its presence. 
<br />- Shake to take a photo, time display, calories and push message function.
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<br />Specifications:
<br />Screen size: 0.86 inches touch OLED
<br />Charging voltage: DC 5V
<br />Charging time: 1-2 hours
<br />Standby time: 7 days
<br />Bluetooth version: 4.0
<br />Bluetooth distance: 10 meters
<br />Color: black / red / purple / cyan (optional)
<br />Material: TPU + PC
<br />Wristband length: 24cm
<br />Wristband width: 13mm
<br />Wristband size: 47 * 16 * 13mm 
<br />Certification: CE / ROHS
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<br />Notice:
<br />1. Please allow 1-3 cm tolerance due to manual measurement.
<br />2. Different displays show the same picture may be slightly differences.
<br />Thx for your understanding. :)