The LY-5515 rear bicycle light combines a red running light with orange turn signals and a projected directional arrow on the ground. The lighting modes and turn signals are controlled by a three-button wireless remote, and an audible signal sounds when the turn signals are activated. The rotating mount can be adjusted to an angle of up to 180°.

The light has a built-in 1,200 mAh rechargeable lithium-polymer battery, which charges via USB Type-C in approximately 3.5 hours. Runtime is up to 16 hours, depending on the selected mode. The light mounts on the seat post, and the remote mounts on the handlebar.

• Type: Rear bicycle light
• Luminous flux: 50 lm
• Light source type: LED
• LEDs: 10 red and 19 orange
• Light color: Red and orange
• Lighting modes: Steady light, flashing, and simultaneous flashing of the red light and projection
• Turn signals: Left and right
• Ground projection: Orange directional arrow
• Control: 3-button wireless remote
• Turn signal sound: Yes
• Light battery: Built-in 1,200 mAh rechargeable lithium-polymer battery
• Remote battery: Replaceable CR2032
• Charging port: USB Type-C
• USB input voltage: 5 V
• Operating voltage: 3.9 V
• Charging time: Approximately 3.5 hours
• Runtime: Up to 16 hours, depending on the mode
• Charging indicator: Red while charging and green when charging is complete
• Mount angle adjustment: Up to 180°
• Light mounting: On the seat post, using a mount and rubber strap
• Remote mounting: On the handlebar, using a mount and retaining strap
• Water protection: Resistant to light splashes
• Material: ABS and AAS plastic, silicone
• Color: Black
• Dimensions: 12.7 x 4.35 x 3.25 cm
• Weight: 0.103 kg
• Package contents: Light, remote, rotating light mount with rubber strap, remote mount, mount retaining strap, USB-A to Type-C charging cable, 3 mm Allen key, and English user manual