Coros Heart Rate Monitor - optical armband, Lime

The COROS HRM-LIM Heart Rate Monitor Optical Armband, Lime, is an optical monitor designed for upper-arm placement. It provides continuous heart rate data during running, cycling, climbing, and fitness training. The device relies on a multi-channel optical sensor to track heart rate metrics. It is intended as a unisex option for endurance athletes and is worn on the upper arm or biceps.

The armband features a scratch-resistant casing and a textured fabric band made from polyester, nylon, and spandex. Hygiene maintenance is straightforward because the fabric is fully washable and reusable. Connectivity options include ANT+ and Bluetooth, with the capacity to pair with up to three Bluetooth devices simultaneously. Compatibility extends to COROS watches, cycling computers, indoor trainers, and Bluetooth-enabled mobile devices. Power is supplied by a rechargeable lithium-ion battery charged via an included magnetic USB cable. An adjustable fit keeps the sensor stable during movement.

• 19 g total weight for unobtrusive wear
• 55 mAh battery capacity provides up to 38 hours of active use
• Dimensions measure 42.5 mm in length, 28.4 mm in width, and 9.1 mm in height
• Lime coloration for high visibility
• Automatic wear detection controls recording start and stop
• Operates without a chest strap for upper-arm monitoring