The YDL 601420 160mAh Lithium Polymer Battery is a 3.7V rechargeable battery with a compact size (6mm x 14mm x 22mm) and lightweight design, weighing only about 4-5g, with a capacity of 160mAh. It features a JST PH2.0mm connector, making it ideal for low-power portable devices. Its applications include MP3/MP4 players, Bluetooth earphones, smartwatches, GPS trackers, and small e-readers, offering high safety, low self-discharge, and a long cycle life.