Eufy S2 Pro

With insurance, the Eufy S2 Pro costs $50 to $250, depending on your plan. Plans add an upgrade fee for this pump. Check your coverage and we’ll tell you your exact cost before you order.

Up to 300 mmHg across 10 expression levels (7 in stimulation mode) and 3 speeds, eufy says. That is a higher maximum than the Spectra S1 and S2, which list 270 mmHg. Compare maximums only; a higher number does not mean a pump empties better.

Assembly takes six steps, from eufy’s user guide. 1. Press the duckbill valve into the small hole inside the container and flick it to check it holds. 2. Fit the container back (lid on the top slot, tab into the container slot), press the top and then the bottom until it clicks, with all 4 alignment marks above it, and press the lid into the spout. 3. Seat the dry diaphragm in its recess. 4. Line up the peg on the pump hub with the diaphragm hole and press the container onto the hub until it clicks. 5. Press the flange on. 6. Pick an insert with the Nipple Measurement Card and set it in the flange tunnel.

Rinse every washable part in warm, soapy water and let it air dry; the pump hub is not washable, so wipe it with a dry cloth. Before first use, eufy says to boil the parts for up to 5 minutes, stirring constantly, or steam them, and never to sanitize in a microwave. Use only the supplied brush on the duckbill valve. eufy’s guide does not say whether the parts are dishwasher safe.

eufy counts 5 parts to wash on each pump. The guide names the milk container, container lid and back, duckbill valve, diaphragm and its lid, and the flange; the pump hub is not washable. eufy rates the washable parts at 1 to 3 months and says to replace them sooner if suction drops, especially the duckbill valve. Replacements are sold at eufy.com.

A 24 mm double-sealed flange, plus 15, 17, 19 and 21 mm sizing inserts in the box. Measure with the Nipple Measurement Card, set the closest insert in the flange tunnel, and try another size if output drops or it hurts, eufy says.

About 6.5 hours of pumping, eufy says, from a 1460 mAh battery in each pump. A pump recharges in about 1.7 hours, on the magnetic cable or in the case.

The case holds 6300 mAh, enough to recharge both pumps about 1.5 times. eufy rates that at up to 7 days for three 20-minute sessions a day with heat and massage off, and heat and massage shorten it. The case itself takes about 3.2 hours to charge.

The pump is the same. The S2 Pro adds the Wireless Charging Case 2.0 and a stain-proof mat. The eufy S2 comes without the case and includes flange dust covers instead.

Under 46 dB, eufy says, the same rating it gives the S2, S1 and S1 Pro.

eufy publishes 300 mmHg as the maximum suction, and we do not call it hospital grade. We describe it by that published number instead.

eufy’s guide says not to lean back or bend forward excessively while pumping, because it can cause leaks. Lean slightly forward when you put the pumps on, so your nipple sits centered in the flange tunnel, and wear a full-coverage nursing bra with a flap.

Most health plans must cover a breast pump under federal rules, and we check whether yours covers the eufy S2 Pro. Start your order through insurance, and we will tell you before anything ships if your plan covers a different pump.