DMDG Smart Watch Bracelet ECG Heart Rate Measurement Sports Wristband Fitness Tracker for Android IOS-Silver ATMEGA328P set the locking screw firmly

set the locking screw firmly to fix the position ¡ñ Internal

Product Description Special Features: - Audio Sensitivity: 85dB Signal To Noise Ratio: ¡¤ Impedance: 4¦¸ Frequency Range (Hz): 70Hz-18KHz Out Power: 80w Material Type: - Item Weight: 0

1 x rc522 RFID module

convenient to peripheral module power supply

Mirror photo or video via HDMI port to larger screen

DMDG Smart Watch Bracelet ECG Heart Rate Measurement Sports Wristband Fitness Tracker for Android IOS-Silver ATMEGA328P set the locking screw firmlyColor Silver Model N A Quantity 1 set Material Stainless steel+ABS Water proof IP67 Bluetooth Version Others,Bluetooth V4. 2 Touch Screen Type IPS Operating System No Compatible OS Android 4. 4 and aboveiOS 8. 0 and above Battery Capacity 200 mAh Battery Type Li polymer battery Standby Time 15 days Packing List 1 x Smart bracelet 1 x Charging cable 1 x English instruction Dimensions: 9. 45 in x 1. 71 in x 0. 51 in (24. 0 cm x 4. 4 cm x 1. 3 cm)