Bicycle Smart Taillight Anti-theft Alarm Brake Warning Light Lithium Battery Charging Multifunctional Version

This bicycle tail light combines a COB rear light, brake-response lighting and a remote-controlled alarm. Its remote cycles through the lighting modes and offers three locator ringtones for finding a parked bicycle.

Lighting and Remote

• Brake response: supplier describes a brighter red display for two seconds when braking.
• Automatic rear-light activation in darkness or tunnels.
• Remote mode cycle: slow flash, breathing, burst flash, steady on and off.
• Supplier-stated remote range: 30–70 m in open conditions.
• Transmitting/receiving frequency: 433.92 MHz.

Battery and Charging

• Built-in 3.7 V, 700 mAh lithium battery.
• USB-C charging at 5 V; some fast-charging adapters are not compatible.
• Supplier-stated standby current: 70–80 µA.
• Supplier-stated normal-use interval: 1–3 months per charge; continuous standby about six months.
• WL03C remote: one 27A 12 V alkaline battery, with supplier-estimated 1–2 years at five uses per day.
• WL09C remote: one CR2032 3 V button cell, with supplier-estimated 2–4 years at five uses per day.

Operating Details

• Supplier-listed operating and storage temperature: −40°C to +70°C.
• Ambient humidity: below 80%.
• Package: one tail light and one remote control.

The selected option does not identify which remote model is included. Runtime and range are supplier estimates, not guarantees; follow the battery and charging instructions supplied with the product.