![Even though the 5510 was revolutionary, it technically wasn't the first phone with an MP3 player. The Siemens SL45 introduced this feature almost 4 months before, in August 2001! : r/vintagemobilephones Even though the 5510 was revolutionary, it technically wasn't the first phone with an MP3 player. The Siemens SL45 introduced this feature almost 4 months before, in August 2001! : r/vintagemobilephones](https://i.redd.it/r6ec92ha0o671.jpg)
Even though the 5510 was revolutionary, it technically wasn't the first phone with an MP3 player. The Siemens SL45 introduced this feature almost 4 months before, in August 2001! : r/vintagemobilephones
![NG – T-Mobile Original Siemens SL45 SL45i Rechargeable Battery Compartment Cover Andeckung Silver: Amazon.de: Electronics & Photo NG – T-Mobile Original Siemens SL45 SL45i Rechargeable Battery Compartment Cover Andeckung Silver: Amazon.de: Electronics & Photo](https://m.media-amazon.com/images/I/81gKTHqjiVS.jpg)
NG – T-Mobile Original Siemens SL45 SL45i Rechargeable Battery Compartment Cover Andeckung Silver: Amazon.de: Electronics & Photo
![Buy Cadex 07-110-8590 | Cadex charger battery adapter. To be used with model V30145-K1310-X136-1 Li 3.6V 550 m ah battery, made for Siemens SL45, SL45i, SL42, 6688, 6686 Buy Cadex 07-110-8590 | Cadex charger battery adapter. To be used with model V30145-K1310-X136-1 Li 3.6V 550 m ah battery, made for Siemens SL45, SL45i, SL42, 6688, 6686](https://www.ameradio.com/img/products/Cadex-Adapters-s.jpg)
Buy Cadex 07-110-8590 | Cadex charger battery adapter. To be used with model V30145-K1310-X136-1 Li 3.6V 550 m ah battery, made for Siemens SL45, SL45i, SL42, 6688, 6686
![Cameron Sino Battery for Siemens 3618, 6618, M45, ME45, S45, S45i PN: Siemens L36880-N4501-A100, V30145-K1310-X185, V30148-K1310-X183 : Amazon.com.be: Electronics Cameron Sino Battery for Siemens 3618, 6618, M45, ME45, S45, S45i PN: Siemens L36880-N4501-A100, V30145-K1310-X185, V30148-K1310-X183 : Amazon.com.be: Electronics](https://m.media-amazon.com/images/I/41xmbB1ADFL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)