GIYO Bluetooth 4.0 Temperature Wireless Bicycle Computer Bike Speedometer

Features:

• Easy to mount (seat post or under the saddle)
• Freely switch the modes with handlebar mounted controller
• Make yourself visible day and night with bright light and laser
• Waterproof level up to IPX4
• Turn signal light indicated by red and yellow LED
• Brake and stop warning lights
• Automatic ON/OFF

Features and specifications:

• Output: 85 lumens
• Input: DC 5V 800Ma
• Lamp battery: Lithium battery 2000mAH #18650
• Controller battery: #CR2032 (button cell), replaceable (battery can usually last up to one year)
• Charges via USB port, about 3-5 hours to fully charge. A full charge can last 4-8 hours depending on the mode used.
• Laser distance: 5 meters
• Light source: 29 LEDs SMT (everlight chips)
• Weight: 0.29 kg