Premium 3.7V 1000mAh Lithium Polymer Battery specifically engineered for smartwatches. High-density Li-Ion/LiPo hybrid construction ensures extended runtime and stable power delivery. Ultra-thin lightweight design (under 5mm profile) with precision-cut gold-plated connectors for optimal conductivity. Features built-in PCB protection against overcharge/over-discharge with ±1% voltage accuracy. Ideal replacement battery for wearables like Fitbit/Garmin clones, supporting 300+ full charge cycles. Bulk packaging available for OEM watch manufacturers and repair shops. Ships with pre-installed plug-and-play connector for seamless installation.