Fits many Casio and other brand solar powered watches. There is no CTL1620. This is a new and fresh cell from Panasonic.

Fits and replaces: Casio WV300DA-7A. Wave Ceptor Watch Casio WV300DA7A Casio PAT2GP-1V GPS Receiver Casio Con GPS Modelo Pathfinder PAT-2GP Casio PAT-2GP Casio Module 2240 Casio Module No. 2240 Casio Model 2240 Casio 2240 Casio PAG50 Casio PAG 50 Casio WVA300 Casio G-Shock GW-400J Casio GW530A Module 2688 Casio Module No. 2825 Casio Module 2825 Casio Model 2825 Casio 2825 Casio Solar Powered Triple Sensor Sea-Pathfinder SPF70T-7V Casio Sea Pathfinder SPF70T Omega Seamaster Diver 300M Mens Watch 2264.50 Omega 2264.50 CT1616 Casio Model 5022 Casio 5022 Casio Module 5022 Casio Module No. 5022 MTG1000 Casio Multi-Band Atomic Solar G-Shock Citizen EcoDrive 180 Casio G-Shock GWM5600-1 Casio Module No. 3063 Casio Model 3063 Casio 3063 Casio G-Shock GW1500A1AV Atomic Watch Casio GShock Watch 3366 Casio QW 2608 Casio QW 2638 Casio QW 2688 Casio GW 500 Casio QW2608 Casio QW2638 Casio QW2688 Casio GW500 MODULE 2688 Casio G-Shock GW300 Casio Module No. 2608 Casio Module 2608 Casio Model 2608 Casio 2608Casio 2587 Casio Module No. 2587 Casio Module 2587 Casio Model 2587 Casio 2406 Casio Module No. 2406 Casio Module 2406 Casio Model 2406 Casio 2583 Casio Module No. 2583 Casio Module 2583 Casio Model 2583 Casio Wave Ceptor WV55H Casio Module No. 2608 Casio Model 2608 Casio Module 2608 Casio 2608 Casio PAW11001V Pathfinder Casio Mens Pathfinder Atomic Solar Digital Paw11001v Casio GW330A-9VCF G-Shock Solar Powered Atomic Watch Casio GShock GW500A-1V Casio GW330A9VCF Casio GW330A-9VCF G-Shock Solar Powered Atomic Watch Casio GW330A-9VCF G-Shock Solar Powered Atomic Watch Casio G-Shock GW-1310 Casio G-Shock GW-1100 Casio Casio GW-1100 Casio G-Shock GW1200BA-1AV Casio G-Shock GW1200A-1AV Casio G-Shock GW1000DJ-9 Casio 2752 Casio Module No. 2752 Casio 2688 Casio MTG-930DA G-Shock Casio G Shock Atomic Module No 3366 Casio Pro Trek PGM 50 Triple Sensor Watch Casio MTG900DA-8V Casio GW-300 Casio G-Shock model GW-330A atomic solar powered watch Casio PRG110T Casio Protrek PRG-110-1V Casio Protrek PRG-110T-7V Casio GW810BXD G-Shock Atomic Timekeeping Casio Module No. 3050 Casio Module 3050 Casio 3050 Casio QW3050 Casio GW-300 Casio Module 2608 Casio Model 2608 Casio 2608 Casio PROTREK Triple Sensor PRG-70T-7V Casio Pathfinder Watch model PRG70T-7V Casio PRG70T Casio Pathfinder PAG-60 Solar Casio G-Shock GW-700BDJ Casio Module No. 2688 Casio Men's G-Shock Atomic Tough Solar Watch #GW530A-1V Casio PAG50 Pathfinder Casio GW-300 tough solar atomic watch Casio G-Shock Tough Solar G-7301V-8V Casio 2816 Casio G-Shock Tough Solar G-7300D-8 Casio G-Shock Tough Solar G-7300-1 Casio Module No. 2534 Casio Model 2534 Casio 2534 Casio G-Shock Tough Solar G-7300D-8 Casio G-Shock G-Lide GL-7200-2 Casio 2836 Casio Module No. 2836 Casio PROTREK PRG-60T-7AVDR Casio PROTREK PRG60T Casio 2608 Casio 2638 Casio 2688 Casio Casio G-Shock Model 2608 GW 300 Casio G-Shock Model 2608 GW300 Casio GW300 Casio 2608 Casio Casio Pro Trek Tough Solar PRG-50T-7VDR Casio Pro Trek Tough Solar PRG-50L-2VDR Casio Pro Trek Tough SolarCasio Pro Trek Tough Solar PRG-50L-2VDR Casio Pro Trek Tough Solar PRG-50-1VDR Casio Module 2471 Casio BGX-221-8 Casio BGX-221-4B Casio BGX-221-4A Casio BGX-221-2C Casio BGX-221-2B Casio BGX-221-2A Casio Baby-G Casio BGX221 Casio Module No. 2611 Casio PRG70-4V/PAG70-4V Triple Sensor Pro Trek Watch Casio PRG-70-1VER Casio Module 2872 Casio 2872 Casio PRG70 Casio Protrek Triple Sensor Pathfinder PRG70-1V PAG70-1V Casio PAS201 Casio MSG-2010D-7VDR MSG2010D 7V Casio Baby-G Watch Ladies Watches Casio GW500A-1V G-Shock Atomic Solar Watch GW500A-1V White Casio G-Shock Multi-Band Solar Atomic Watch GWM850-7 Casio White G-Shock Multi-Band Solar Atomic Watch. GWM850-7 -Casio GW300A-1V G-Shock Solar Powered Atomic Watch Casio PAS201-1V Casio Moon age/phase Solar Power Pathfinder Watch Casio GW300A-1V Casio G-Shock Solar Powered Atomic Watch Casio Pathfinder Solar Atomic watch Thermometer Altimeter Casio Pathfinder Watch Titanium Triple Sensor Alarm Casio Module 2872 Casio G-Shock MTG900DA-8V Casio Module 2638 Citizen WR200 SolarTech Casio GShock Atomic GW500A-1V Casio Atomic-Solar Watch MTG900 Casio G-Shock GW510A-2A Atomic Solar Casio GW510A1V Casio GW510A Casio G-Shock GW510A-1A Casio PAW1500-1V Men Pathfinder, Casio 2767 Casio WV300 Casio WV 300 Casio MTG-900, Casio GW056A1V GShock Watch Casio GW056A CASIO Pathfinder 2471 Casio, Casio 2471 Casio, Casio PRG-60 Casio, Casio PRG60 Casio, CGSHOCK GW700B GShock, Casio GW700B Casio, asio G-Shock Solar Atomic Watch GW700BDJ-2, Casio GW700BDJ Casio, Casio GW700BDJ2 GShock, Casio GW700BDJ-2 G-Shock, Casio GW-300 Casio, Casio Solar MT-G 900 Watch, Casio G-Shock 2608 GW-300, CASION GSHOCK 2688, CASIO GSHOCK 2688 Casio, Casio Pathfinder PAG50T model 2471, Casio PAG50T Casio, Casio 2471 Casio, Casio Pathfinder watch model #PAG40B-2V, Casio Pathfinder watch model #PAG40B-2V Casio Pathfinder, Casio Waveceptor Tough Solar GShock Watch MTG900 Casio, Casio Waveceptor Tough Solar G Shock Watch MTG 900 Casio, GW300A1VCR Casio, Casio GW 300A 1VCR, Casio GW300A1VCR, GW500A1V, GW500A 1V, Casio GW500A1V, Casio GW500A 1V, GShock Atomic Solar Watch Casio GW500A 1V,CASIO SOLAR PATHFINDER, GW500a, gw 500a, Casio GShock 2638 MTG900, CASIO GW500A, 2818, Module 2818, casio g shock gw500a, Casio G Shock WR200M, Casio G Shock watch model #2608, CASIO MODULE 2762, Casio Model 2762, Casio 2762, Casio G-Shock MTG-900 Model 2638, Casio MTG900, PRG-50, Casio Sea Pathfinder Serial 2352 SPS201, Casio Module 2608 Casio, Casio Model 2608 Casio, CASIO SOLAR POWER WATCH, GW-300 model #2608, G-Shock MT-G, CASIO module No. 2471 solar watch, CASIO GShock G5600 Casio GShock, GW300A-1VCR, Solar GShock Watch, CASIO Module 2471 Casio, CTL 1616, Casio 3366 Casio, Casio Module 3366 Casio, GW700A, Casio watch model 2608, Casio Pathfinder Triple Sensor platinum watch, CASIO CTL 1616, CASIO GW7 GW700 Series, Casio MTG-900, Casio Pro Trek PRG50 Tough Solar, CASIO PRT50, Casio 2534, Casio Patherfinder Multi Band Five watch, PAW 1200-3V, Casio Waveceptor WVA430DJ-1A, Casio Waveceptor WVA430J-1A, Module 3311, Casio PAW12003V, Casio Waveceptor WV300DA-7A, Module 3023, Casio Waveceptor FTW100D-7V, Module 2628, Casio Pathfinder SPW1000-2V, Model 3047, Casio Pathfinder PAG60-1AV, Module 2767, Casio Pathfinder PAG80 Series, Casio Pathfinder PAG80-1V, Casio Pathfinder PAG80L-3V, Casio Pathfinder PAG80T-7V, Module 2894, Casio Pathfinder PAW1100T-7V, Casio Pathfinder PAW1200 Series, Casio Pathfinder PAW1200-1V, Casio Pathfinder PAW1200-3V, Casio Pathfinder PAW1200T-7V, Module 3043, Model 3043, Casio Pathfinder PAW1300 Series, Casio PAW1300-1V, Casio PAW1300G-1V, Casio PAW1300T-7V, Module 3070, Casio Pathfinder PAW1500 Series, Casio Pathfinder PAW1500-1V, Casio Pathfinder PAW1500T-7V, Module 3134, Casio GShock MTG930DA-8V, Casio Solar GShock MTG930DA-8V, Module 2688, Model 2688, Casio GShock MTG910DA-1V, Casio Solar GShock MTG910DA-1V, Module 2638, Casio Solar GShock MTG900DA-8V, Module 2638, Model 2638, Casio GShock GWM5625E-7, Casio Solar Gshock GWM5625E-7, Model 3063, Casio GShock GW9100-1, Casio Solar GShock GW9100-1, Casio GShock GW9000A-1, Casio Solar GShock GW9000A-1, Casio GShock GW810D-1A, Casio Solar GShock GW810D-1A, Casio Solar GW800 Series, Casio GShock GW800-1V, Casio Solar GShock GW800-1V, Casio GShock GW800D-1V, Casio Solar GShock GW800D-1V, Casio Solar GW700 Series, Casio Gshock GW700A-1V, Casio Solar GShock GW700A-9V, Casio GShock GW600DA-1V, Casio Solar GShock GW600DA-1V, Model 2971, Casio GShock GW5600 Series, Casio Solar GShock GW5600BCJ1, Casio Solar GShock GW5600J1, Casio GShock GW5600BCJ1, Casio GShock GW5600J1, Module 2924, Casio Solar GShock GW530A1V, Casio GShock GW500A-1V, Casio Solar GShock GW500A-1V, Module 2688, Casio GShock GW330A-9V, Casio Solar GShock GW330A-9V, Model 2688, Casio GShock GW225 Series, Casio GShock GW225A1, Casio GShock GW225E7, Casio Solar GShock GW225A1, Casio Solar GShock GW225E7, Module 2422, Casio GShock GW1500A1AV, Casio Solar GShock GW1500A-1AV, Casio Solar GShock, Casio Gshock GW1400DA-4AV, Casio Solar GW1400DA-4AV, Casio Solar GShock GW002KA-3V, Module 2913, Casio GShock G5500 Series, Casio GShock G5500C-3, Casio GShock G5500C-4, Casio GShock G5500C-7, Casio GShock G5500MC-5, Module 3062, Model 3062, Casio GShock G2800B-1V, Module 2534, Model 2534, Casio Solar GShock G2800B-1V, Casio AWG101-1A, Casio Solar AWG101-1A, Module 4765, Casio AWG100-1A, Module 4765, Model 4765, Casio Solar AWG100-1A, Casio Triple Sensor ProTrek PRG50, AWG100-1ACasio G-Shock G2800, CASIO - A168W-1 - Illuminator Watch, CASIO G-SHOCK WATCH MODEL GW-300, Casio Pathfinder, Casio Tough Solar Triple Sensor Pathfinder, Casio GW800D1VER, Casio GW810BXD1ER, GW800D1VER, PAG50T7V Casio Pathfinder, PAG50T7V, CASIO PAG50T7V, Casio PAG50, Casio G-Cool BGC100L, Casio GW810BD1ER, GW810BD1ER, Casio Atomic Solar Powered G-Shock, MTG900DA8V, Casio Waveceptor, CTL 1616, CASIO WATCH BATTERY CTL1616, Casio Tough Solar Triple Sensor Pathfinder, Casio Atomic Solar Powered G-Shock, Casio Waveceptor G-Shock AWG100 G-Shock AWG101, G-Shock G2800, G-Shock G7300, G-Shock G7301, G-Shock GW002, G-Shock GW056 G-Shock GW1400, G-Shock GW1500, G-Shock GW300, G-Shock GW330, G-Shock GW410, Casio Sea Pathfinder SPS201, SPS 201, SPS201.

G-Shock GW530, G-Shock GW5600, G-Shock GW600, G-Shock GW610, G-Shock GW700, G-Shock GW800, G-Shock GW810 G-Shock MTG930 G-Shock MTG950, G-Shock MTG960, Pathfinder PAG50, Pathfinder PAG70, Pathfinder PAG80, Pathfinder PAW1200, Pathfinder PAW1300, Pathfinder SPF70, Waveceptor FTW100, Waveceptor WV300, Waveceptor WV301, Waveceptor WVA510, Waveceptor WVQ500.

These rechargeable CTL1616 batteries are used in many Casio watches. For example the Casio Atomic Solar Powered G-Shock uses 2 CTL1616.

CTL is the designation for a rechargeable secondary battery. The CR prefix taxonomy is a primary disposable battery and is a 3 volt cell; all CR prefixes are 3 volt lithium coin cells. The CTL1616 while the same size as the CR1616 function completely differently and are not interchangeable. The CTL1616 is 2.3 volts and is recharged by solar or light or kinetic movement. The CR1616 is 3 volts is not rechargeable and will not function properly in a time piece designed for a 2.3 volt circuit. There is only one manufacturer of the CTL1616, Panasonic and they sell through Casio parts distribution.

Item Specifications
Unit Cost:	19.95
Weight:	0.0170 lbs.
Voltage:	2.3
Capacity:	18
Chemistry:	Lithium-Ion