Specifications: Condition: Brand New Material: PC Color: Black Item Size: 125*49*29mm Number of LED: 31 Alarm/Horn Noise Level: 110dB Waterproof: IP54 Remote Range: up to 98ft (up to 196ft in the open air) Taillight Battery: 3.7V 2000mAh lithium battery (included) Remote Battery: 3V CR2032 battery (included) Rechargeability: Taillight battery only (USB Type-C rechargeable) Full Charging Time: About 7 hours (with the original USB cable and your 3A charger adapter) Tail Light Battery Life: Up to 70 hours (on fast flash mode) Tail Light Battery Life: Up to 30 hours (on steady mode) Remote Battery Life: Up to 3 years (30 times per day) Working Temperature: -40 ~ +60, Storage Temperature: -40 ~ +70 Working Humidity: Features: LED bike tail light with turn signal has 31 of 85LM LED lights, bright enough to be seen from 150ft away in foggy/rainy day or even in dark night. Remote control the bike tail light to send signals in different modes by the 5 easy to use buttons on the wireless controller. Remote control on handlebar, easy for cyclist to control during riding. Suitable for Mountain, MTB and Road Bicycles. The bike turn signals use 18650 3.7V 2000mA Li-on battery, keep running for 30 hours under the steady light mode after fully charged. The remote control equipped with a CR2032 replaceable coin cell battery and it can keep working for 3-5 years(30 times per day). Anti-theft Alarm: 110dB Anti-theft tail light can be used as a bike alarm. if the alarm taillight detected vibration, it will sound a warning for 2 seconds; if it detected vibration again within 2-12 seconds, the alarm taillight will sound for 30 seconds to scare off the thief (multiple sounds loop). The Remote control also can be used as a bike electric horn. IP54 Waterproof level make this bike turning light can be used in small to moderate rain in the temperature of in -4-140F. Your best partner for outdoor biking. Cycling Safety Mountain Bike. Package Included: 1pc x Bike Taillight Alarm (including battery) 1pc x Remote Controller (including battery) 1pc x Taillight Mounting Bracket 1pc x Remote Mounting Bracket 1pc x USB Type-C Cable Note: Other accessories demo in the picture is not included. Actual colors may be a little different due to different monitors. Please allow 1-5mm deviation due to manual measurement.