Sennheiser RS 120 II vs Philips SHB2515BK/00 – Detailed Specs Comparison (2026)

2-year warranty. Appealing, modern design. Range of up to 100 metres (300 feet). Optional wall mounting of transmitter possible. Rechargeable NiMH batteries included (size: AAA). Open, stereo, supraaural, wireless RF headphone system. Suitable for all types of modern music and TV applications. Wireless freedom with reception through walls and ceilings. Very lightweight headphones, extremely comfortable to wear. Detailed, analytical sound reproduction with strong bass response. Transmitter with metal cradle for storing and recharging the headphones. Control elements conveniently positioned to provide easy, intuitive operation.

Feels good. Looks good. Easy pairing. Voice control. Cut loose. 70 hours of play time. No wires. Built-in mic with echo cancellation for clear audio. Soft rubberized wing tips. Secure and comfortable. Multi-function button. Easily control music and calls. Mono mode for when you want to leave one ear free. Get up to 70 hours play time or talk time with the case. Smart pairing. Automatically find your Bluetooth device. Oval acoustic tube. Comfort and passive noise isolation. USB port on charging case. Charge your phone on the go. Ear-tip covers in small, medium, and large-for a perfect fit. A double button-press wakes your phone's voice assistant. Portable charging case with built-in 3350 mAH power bank. 6 mm neodymium acoustic drivers. Great sound, punchy bass.

From a usability standpoint, both models provide a reliable and premium headphone experience. Battery life varies between the two (20 Hours vs 70 Hours), which affects how long you can use them on a single charge. Sennheiser RS 120 II and Philips SHB2515BK/00 are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. There is a noticeable difference in weight (200 gm vs 116 gm), which may affect comfort during extended use. The frequency response differs (22 Hz - 19500 Hz vs 20 Hz - 20000 kHz), which can influence how well the headphones reproduce lows, mids, and highs. The driver size differs between the two (NA vs 6 mm), which can influence sound depth, bass response, and overall audio clarity. Impedance levels vary (24 ohm vs 16 ohm), which can affect compatibility and audio output when used with different devices. Sennheiser RS 120 II and Philips SHB2515BK/00 offer different noise cancellation capabilities (NA vs Passive), which can impact how effectively they block external noise. Sennheiser RS 120 II uses Bluetooth NA while Philips SHB2515BK/00 supports Bluetooth 5.0, which can impact connectivity stability and efficiency.

Verdict: Choosing between Sennheiser RS 120 II and Philips SHB2515BK/00 depends on whether you value better sound, longer battery life, or enhanced features.

Top Differences

Battery Life: 20 Hours vs 70 Hours
Noise Cancelling: NA vs Passive
Driver Size: NA vs 6 mm
Bluetooth: NA vs 5.0
Weight: 200 gm vs 116 gm

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Top Differences