P20 OBD2 + GPS Mode Car Head-up Display HUD Overspeed / Speed / Water Temperature / Engine Failure Alarm Survival & Emergency Gear It can be put or

It can be put or hung on curtain

Filter type: stainless steel + sponge + non-woven filter

Positive and negative polarity reminder: Yes

Channel: mono

4) Luminous Flux: 6-7lm

P20 OBD2 + GPS Mode Car Head-up Display HUD Overspeed / Speed / Water Temperature / Engine Failure Alarm Survival & Emergency Gear It can be put or1. Screen size: 3. 5inch 2. Product size: 90x53x26mm 3. Bare metal weight: 75g 4. OBD mode display information: driving speed, engine speed, fuel consumption, water tank temperature, voltage, mileage measurement (word driving miles and single driving time, manual automatic brightness adjustment, mile switching). Alarm: Overspeed alarm, high speed alarm, fatigue driving reminder, low voltage alarm, high water temperature alarm, engine failure alarm,