SATCO Lighting S21296 4W CA10 LED, Clear, Candelabra Base, 90 CRI, 2700K, 120V

Yes, the 4W CA10 is a dimmable lamp. Pair it with a dimmer rated for LED loads; older incandescent-style dimmers often have a minimum load that a single 4 watt lamp will not meet, so flicker usually traces back to the dimmer, not the bulb.

It puts out 350 lumens on 120 volts. That is in the range of a 40 watt incandescent candelabra lamp, so for most chandeliers and sconces it is a like-for-like swap at roughly a tenth the wattage. In a multi-lamp chandelier, the total load drop also matters for dimmer compatibility.

Light color should match closely. The S21296 is 2700K, the warm white tone of a standard incandescent, and it is a clear glass lamp so the filament-style look stays visible in an open chandelier. At 90+ CRI it renders wood, fabric and skin tones closer to incandescent than a typical 80 CRI LED, which is why it suits hospitality lobbies and dining areas where mixed sources are visible.

Clear is the one to use when the lamp itself is on view, as in an open-arm chandelier or a sconce with no shade, because the glass stays transparent and the source reads as a traditional candle lamp. The tradeoff is a brighter visible point of light and sharper shadows. In a fixture with a shade or diffuser the clear version is fine too, since the shade does the softening. The S21296 is the clear version.

120 volt line voltage. It wires into a standard North American residential or commercial circuit with no transformer or driver needed. Do not use it on a 12V or 24V low-voltage fixture.

Glass envelope on a nickel plated aluminum base. The aluminum base resists corroding into the socket the way plated steel can in damp or coastal locations, which matters when you are on a lift relamping a high chandelier. The lamp weighs 0.04 lb, so it adds essentially nothing to an arm-mounted fixture.

Satco publishes a PDF spec sheet for the S21296 4W CA10 clear LED, linked in the product's spec data. It is the document to attach when a 90 CRI, 2700K candelabra lamp has to be submitted against a lighting schedule.