Infinity Spin 100 Black

Infinity Spin 100 Black

The Infinity Spin 100 in Black is a pair of true wireless in-ear earbuds from Infinity by Harman, built for everyday listening with a choice of two sound characters. Dual EQ modes let the listener switch between a balanced presentation and a deep-bass presentation, so the same earbuds can favour clarity for podcasts and calls or extra low-end weight for music. Bluetooth 5.0 handles the wireless connection to phones, tablets and laptops, and the compact charging case extends total listening to up to 20 hours.

Each earbud carries a 6.0mm dynamic driver covering the full 20Hz to 20kHz range. The earbuds themselves play for about 5 hours on a charge, and the case, with its own 380mAh battery, refills them on the move. An IPX4 splash-proof rating covers light workouts, commuting and everyday splashes, and the case charges over USB Type-C.

Key features

• True wireless in-ear design with compact charging case
• Dual EQ modes: balanced sound or deep bass
• 6.0mm dynamic drivers with 20Hz to 20kHz frequency response
• Bluetooth 5.0 with auto connection when the case is opened and earbuds removed
• About 5 hours of playback from the earbuds, up to 20 hours combined with the case
• IPX4 splash-proof rating for workouts and daily use
• USB Type-C charging for the case
• Black finish

Two EQ modes, one pair of earbuds

Most budget earbuds commit the listener to a single factory tuning. The Spin 100’s Dual EQ gives a genuine choice instead. Balanced mode keeps vocals and detail forward, which suits podcasts, video, calls and acoustic music, while the deep-bass mode adds low-frequency emphasis for electronic, hip-hop and pop tracks that are mixed to be felt as much as heard. Switching modes is done on the earbuds themselves, so the preference travels with the listener rather than depending on an app equaliser on one particular phone. Combined with the 6.0mm dynamic drivers, the result is an earbud that can be adjusted to the content instead of forcing every recording through the same bass-heavy signature.

Battery life and charging

Each earbud holds a 55mAh lithium-ion polymer battery giving about 5 hours of playback, and takes roughly 1.5 hours to recharge in the case. The charging case carries a 380mAh battery, charges in under 2 hours over its Type-C port, and brings combined playback to up to 20 hours, enough for several days of commuting or a full week of workouts between case charges. The case input is rated at 5V and 1A, and the manual advises against charging from high-voltage fast chargers, so a standard USB power source is the right partner. LED indicators on the case and earbuds show charging and connection status at a glance.

Fit, calls and daily use

The earbuds auto-connect when taken out of the case, re-pairing with the remembered device, and closing the case ends the connection and starts charging, so day-to-day use is simply open, listen, replace. Bluetooth profiles include HFP for hands-free calls, A2DP for music and AVRCP for playback control, covering the standard phone, tablet and laptop duties. The IPX4 rating means splashes and sweat are not a concern for gym sessions and outdoor walks, although the earbuds should not be submerged. As with all in-ear earbuds, choosing the ear tip size that seals properly is what delivers the rated bass and the secure fit the design intends.

The Infinity Spin 100 Black is a practical everyday true wireless earbud: two switchable sound modes, a full day-plus of combined battery life from the case, splash resistance and Type-C charging, in a compact black package that disappears into a pocket.