Bea-Fon Watch 401. Features: Display:. Technology:AMOLED. Size:3.63 cm (1.43 inches). Resolution:466 x 466 pixels. Operation / Sensors:Touchscreen. Buttons on the side. Acceleration sensor. Heart rate sensor. Functions:Bluetooth call. Heart rate1. Blood oxygen. Calorie consumption measurement. Stress measurement. Sleep monitoring. Notifications. Pedometer. Fitness. Stopwatch. Timer. Torch. Alarm. Weather. Supports Alexa. Compatible with Smart Time Pro App. Energy:Lithium-ion battery (300 mAh). Max. Running time:7 days. Dimensions:Silicone strap in black. Housing in black. Dimensions:46.5 x 51.5 x 12 mm. Weight:42 g. 1 This product is not a medical device and is not intended to diagnose, treat, cure or prevent any disease. -Housing Width (mm):46,5. -Housing Height (mm):51,5. -Dust Protection:Yes. -Water Shield:Yes. -Protection Class (IP Code):IP67. -Heart Rate Measurement:Yes. -Calorie Consumption Measurement:Yes. -Sleep Monitoring / -Recording:Yes. -Pedometer:Yes. -Wake Up Function:Yes. -Display Type:AMOLED. -Display:Analogue. -Screen Diagonal (cm):3,63. -Display Diagonal (inch):1,43. -Touch Screen:Yes. -Resolution (Pixels):466 x 466. -Energy Supply:Rechargeable Battery. -Type of Battery / Rechargeable Battery:Lithium-Ion. -Required Number of Batteries / Rechargeable Batteries:1. -Battery Capacity (mAh):300. -Max. Operating Time (h):168. -Max. Operating Time (Days):7. -Compatible with:Android 4.4 / iOS 9 and later. -Accelerometer:Yes. -GPS Receiver:No. -Speakers:Yes. -Microphone:Yes. -Type:Smartwatch. -Bluetooth:5.3. -Strap Colour:Silicone. -Material Housing:Plastic. -Strap Colour:Black. -Colour Housing:Black. -Width (mm):46,5. -Height (mm):51,5. -Depth (mm):12. -Weight (g):42.