This item is brand new Zero Cycle Premium Quality Battery Replacement for iWatch Series 1 (42mm). Low quality of batteries may effect to your iWatch's working conditions. Accordingly replace your iWatch's useless drain batteries with iWatch Series 1 battery and use your iWatch for long time again and with original quality! We offer you best quality with affordable wholesale prices plus fastest shipping options. After using iWatch for a while, battery may drain or physically damaged. You might need to replace your iWatch's battery in case of: Battery gets drained in short time Apparent physical damage of battery. Sudden drop in battery charge or it charges shorter time than what it suppose to be. Unexpected shutdown of iWatch. Compatible With iWatch series 1 (42mm) and model numbers A1803. Features Brand new Built-in rechargeable Li-Ion 205 mAh 0.78 Wh battery. Up to 18 hours of all daily usage. This item includes only battery and adhesive. Charging via USB to computer system or power adapter. Warranty All the products tested twice and it is confirmed that they are in perfect working condition before then shipment. 1 year warranty provided by the seller. Warranty covers replacements for only non-human or natural damages like dead batteries, battery working problems. Warranty does not cover defective products like cracked, broken batteries or ripped cables. Warnings Please make sure that you have selected the right parts for your order, if any confusions please contact us! Product Installations should be done only by authorized or certified persons.