M4 max smart watch Features:

• Model: M4 Max
• Color: Black,Red,Blue
• Bluetooth Version: BT 4.0 or above
• Compatible OS: Android 4.4 or above , iOS 8.0 or above
• Operating Mode: Touch Key
• APP Name: Lefun Health/Wearfit
• App Language: English, Portuguese, Spanish, German, French, Russian, Turkish, Polish, Finnish, Dutch, Croatian, Japanese, Korean, Thai, Indonesian, Malay, Arabic, Traditional Chinese
• Waterproof: IP67 deep waterproof
• Heart Rate Monitor: Support
• Blood Pressure Monitor: Support
• Blood Oxygen Monitor: Support
• Sleep Monitor: Support
• Multi-sport Modes: Support
• Pedometer: Support
• Call orMessage Reminder: Support
• Reject Call: Support
• Notification: Support Facebook,Twitter,Wechat, WhatsApp etc.
• Alert Type: Vibration
• Auto Light-up Screen: Support
• Other Functions: Support Alarm,Calender,Sedentary reminder,Camera remote control,Anti-lost,
• Sensor: G-sensor, Heart Rate Sensor
• Screen: Size: 0.96inch
• Type: TFT
• Resolution: 80*160pixels
• Battery: Battery Capacity: 90mAh
• Standby Time: About 30 days
• Using time: About 5-7 days
• Charging Time: About 2 hours
• Charging Type: charging clamp
• Appearance & Details
• Band: Material: Silicone
• Length: 260mm
• Width: 19mm (free change strap without any tools)
• Weight and Size
  Product size: 260*19*11mm
  Product weight: 50g