This rear view radar with tail light pairs with your Edge® bike computer or compatible smartphone to alert you of vehicles approaching from behind.

• Dimensions: 3.9” x 0.8” x 1.6" (98.6 x 19.7 x 39.6 mm)
• Weight: 2.5 oz (71.0 g)
• Modes: solid, peloton, night flash, day flash 
• Lumens: 20 solid, 8 peloton, 29 night flash, 65 day flash
• Battery life: 6 hours solid, 8 hours peloton, 6 hours night flash, 16 hours day flash
• ANT+®: Yes
• BLE: Yes
• Water rating: IPX7
• Viewing angle: 220°