sony silver 1.55v battery, 10pcs Cheapest shipping from $3 SKU: 337 Stock Status: In Stock $4 Excluding Tax Quantity pcs Add To Cart Description Sony 1.55V button cell battery, 337 SR416SWPower: 8mAhCurrent: 10μASize: Φ4.8mm*1.65mmWeight: 0.12gWorking time of earpiece: 3~5 hrs.